./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.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 0451dd3f8b23a82c5bdbe01b3aa3776bb079c0a7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 13:45:49,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 13:45:49,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 13:45:49,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 13:45:49,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 13:45:49,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 13:45:49,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 13:45:49,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 13:45:49,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 13:45:49,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 13:45:49,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 13:45:49,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 13:45:49,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 13:45:49,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 13:45:49,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 13:45:49,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 13:45:49,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 13:45:49,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 13:45:49,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 13:45:49,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 13:45:49,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 13:45:49,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 13:45:49,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 13:45:49,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 13:45:49,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 13:45:49,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 13:45:49,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 13:45:49,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 13:45:49,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 13:45:49,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 13:45:49,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 13:45:49,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 13:45:49,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 13:45:49,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 13:45:49,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 13:45:49,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 13:45:49,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 13:45:49,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 13:45:49,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 13:45:49,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 13:45:49,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 13:45:49,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 13:45:49,775 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 13:45:49,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 13:45:49,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 13:45:49,777 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 13:45:49,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 13:45:49,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 13:45:49,779 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 13:45:49,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 13:45:49,780 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 13:45:49,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 13:45:49,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 13:45:49,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 13:45:49,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 13:45:49,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 13:45:49,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 13:45:49,782 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 13:45:49,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 13:45:49,782 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 13:45:49,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 13:45:49,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 13:45:49,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 13:45:49,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 13:45:49,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:45:49,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 13:45:49,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 13:45:49,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 13:45:49,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 13:45:49,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 13:45:49,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 13:45:49,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 13:45:49,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0451dd3f8b23a82c5bdbe01b3aa3776bb079c0a7 [2021-08-29 13:45:50,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 13:45:50,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 13:45:50,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 13:45:50,140 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 13:45:50,141 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 13:45:50,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c [2021-08-29 13:45:50,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5e10db7e/46e20ea0fa8d4f13852794a37d6dbefe/FLAG521b805ef [2021-08-29 13:45:50,631 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 13:45:50,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c [2021-08-29 13:45:50,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5e10db7e/46e20ea0fa8d4f13852794a37d6dbefe/FLAG521b805ef [2021-08-29 13:45:51,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5e10db7e/46e20ea0fa8d4f13852794a37d6dbefe [2021-08-29 13:45:51,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 13:45:51,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 13:45:51,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 13:45:51,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 13:45:51,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 13:45:51,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:45:51" (1/1) ... [2021-08-29 13:45:51,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7942a27d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:45:51, skipping insertion in model container [2021-08-29 13:45:51,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:45:51" (1/1) ... [2021-08-29 13:45:51,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 13:45:51,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 13:45:51,257 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/hard2_valuebound10.c[526,539] [2021-08-29 13:45:51,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:45:51,286 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 13:45:51,299 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/hard2_valuebound10.c[526,539] [2021-08-29 13:45:51,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:45:51,327 INFO L208 MainTranslator]: Completed translation [2021-08-29 13:45:51,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:45:51 WrapperNode [2021-08-29 13:45:51,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 13:45:51,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 13:45:51,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 13:45:51,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 13:45:51,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:45:51" (1/1) ... [2021-08-29 13:45:51,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:45:51" (1/1) ... [2021-08-29 13:45:51,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 13:45:51,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 13:45:51,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 13:45:51,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 13:45:51,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:45:51" (1/1) ... [2021-08-29 13:45:51,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:45:51" (1/1) ... [2021-08-29 13:45:51,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:45:51" (1/1) ... [2021-08-29 13:45:51,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:45:51" (1/1) ... [2021-08-29 13:45:51,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:45:51" (1/1) ... [2021-08-29 13:45:51,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:45:51" (1/1) ... [2021-08-29 13:45:51,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:45:51" (1/1) ... [2021-08-29 13:45:51,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 13:45:51,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 13:45:51,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 13:45:51,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 13:45:51,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:45:51" (1/1) ... [2021-08-29 13:45:51,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:45:51,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:45:51,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 13:45:51,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 13:45:51,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 13:45:51,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 13:45:51,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 13:45:51,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 13:45:51,682 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 13:45:51,682 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-08-29 13:45:51,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:45:51 BoogieIcfgContainer [2021-08-29 13:45:51,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 13:45:51,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 13:45:51,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 13:45:51,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 13:45:51,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 01:45:51" (1/3) ... [2021-08-29 13:45:51,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f55fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:45:51, skipping insertion in model container [2021-08-29 13:45:51,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:45:51" (2/3) ... [2021-08-29 13:45:51,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f55fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:45:51, skipping insertion in model container [2021-08-29 13:45:51,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:45:51" (3/3) ... [2021-08-29 13:45:51,699 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound10.c [2021-08-29 13:45:51,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 13:45:51,707 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-29 13:45:51,758 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 13:45:51,770 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 13:45:51,770 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-29 13:45:51,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 38 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) [2021-08-29 13:45:51,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 13:45:51,791 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:45:51,792 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:45:51,792 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:45:51,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:45:51,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-08-29 13:45:51,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:45:51,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817905151] [2021-08-29 13:45:51,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:45:51,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:45:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:45:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:45:51,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:45:51,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817905151] [2021-08-29 13:45:51,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817905151] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:45:51,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:45:51,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 13:45:51,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959204368] [2021-08-29 13:45:51,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 13:45:51,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:45:52,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 13:45:52,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:45:52,014 INFO L87 Difference]: Start difference. First operand has 39 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 38 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:45:52,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:45:52,140 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2021-08-29 13:45:52,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 13:45:52,142 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-08-29 13:45:52,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:45:52,148 INFO L225 Difference]: With dead ends: 75 [2021-08-29 13:45:52,148 INFO L226 Difference]: Without dead ends: 35 [2021-08-29 13:45:52,150 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:45:52,153 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 107.65ms IncrementalHoareTripleChecker+Time [2021-08-29 13:45:52,154 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 41 Unknown, 0 Unchecked, 0.50ms Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 107.65ms Time] [2021-08-29 13:45:52,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-08-29 13:45:52,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-08-29 13:45:52,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:45:52,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-08-29 13:45:52,220 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2021-08-29 13:45:52,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:45:52,221 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-08-29 13:45:52,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:45:52,221 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-08-29 13:45:52,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 13:45:52,221 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:45:52,222 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:45:52,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 13:45:52,223 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:45:52,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:45:52,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-08-29 13:45:52,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:45:52,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625718999] [2021-08-29 13:45:52,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:45:52,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:45:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:45:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:45:52,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:45:52,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625718999] [2021-08-29 13:45:52,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625718999] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:45:52,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:45:52,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 13:45:52,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260671649] [2021-08-29 13:45:52,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 13:45:52,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:45:52,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 13:45:52,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 13:45:52,297 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:45:52,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:45:52,388 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2021-08-29 13:45:52,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 13:45:52,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-08-29 13:45:52,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:45:52,389 INFO L225 Difference]: With dead ends: 54 [2021-08-29 13:45:52,390 INFO L226 Difference]: Without dead ends: 52 [2021-08-29 13:45:52,390 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.73ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 13:45:52,391 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.65ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.86ms IncrementalHoareTripleChecker+Time [2021-08-29 13:45:52,392 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 91 Unknown, 0 Unchecked, 1.65ms Time], IncrementalHoareTripleChecker [11 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 68.86ms Time] [2021-08-29 13:45:52,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-08-29 13:45:52,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2021-08-29 13:45:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:45:52,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-08-29 13:45:52,398 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 7 [2021-08-29 13:45:52,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:45:52,399 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-08-29 13:45:52,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:45:52,399 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-08-29 13:45:52,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 13:45:52,400 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:45:52,400 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:45:52,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 13:45:52,400 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:45:52,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:45:52,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-08-29 13:45:52,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:45:52,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7671727] [2021-08-29 13:45:52,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:45:52,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:45:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:45:52,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:45:52,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:45:52,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7671727] [2021-08-29 13:45:52,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7671727] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:45:52,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:45:52,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 13:45:52,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906461589] [2021-08-29 13:45:52,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 13:45:52,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:45:52,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 13:45:52,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 13:45:52,454 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:45:52,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:45:52,534 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2021-08-29 13:45:52,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 13:45:52,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-29 13:45:52,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:45:52,536 INFO L225 Difference]: With dead ends: 52 [2021-08-29 13:45:52,536 INFO L226 Difference]: Without dead ends: 50 [2021-08-29 13:45:52,537 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.36ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 13:45:52,538 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.27ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.03ms IncrementalHoareTripleChecker+Time [2021-08-29 13:45:52,538 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 89 Unknown, 0 Unchecked, 1.27ms Time], IncrementalHoareTripleChecker [12 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 62.03ms Time] [2021-08-29 13:45:52,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-29 13:45:52,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2021-08-29 13:45:52,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:45:52,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-08-29 13:45:52,547 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 9 [2021-08-29 13:45:52,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:45:52,547 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-08-29 13:45:52,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:45:52,548 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-08-29 13:45:52,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 13:45:52,548 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:45:52,548 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:45:52,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 13:45:52,549 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:45:52,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:45:52,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-08-29 13:45:52,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:45:52,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317255181] [2021-08-29 13:45:52,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:45:52,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:45:52,574 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:45:52,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656439192] [2021-08-29 13:45:52,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:45:52,579 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:45:52,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:45:52,580 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 13:45:52,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 13:45:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:45:52,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-29 13:45:52,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:45:52,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:45:52,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 13:45:52,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:45:52,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317255181] [2021-08-29 13:45:52,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:45:52,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656439192] [2021-08-29 13:45:52,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656439192] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:45:52,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:45:52,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 13:45:52,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678208923] [2021-08-29 13:45:52,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 13:45:52,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:45:52,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 13:45:52,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 13:45:52,807 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:45:52,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:45:52,897 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2021-08-29 13:45:52,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 13:45:52,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-29 13:45:52,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:45:52,898 INFO L225 Difference]: With dead ends: 72 [2021-08-29 13:45:52,898 INFO L226 Difference]: Without dead ends: 50 [2021-08-29 13:45:52,899 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.31ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 13:45:52,900 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.21ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.45ms IncrementalHoareTripleChecker+Time [2021-08-29 13:45:52,900 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 108 Unknown, 0 Unchecked, 1.21ms Time], IncrementalHoareTripleChecker [8 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 69.45ms Time] [2021-08-29 13:45:52,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-29 13:45:52,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-08-29 13:45:52,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.225) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:45:52,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-08-29 13:45:52,909 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 11 [2021-08-29 13:45:52,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:45:52,909 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-08-29 13:45:52,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:45:52,909 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-08-29 13:45:52,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 13:45:52,910 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:45:52,910 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:45:52,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 13:45:53,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:45:53,125 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:45:53,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:45:53,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1783857492, now seen corresponding path program 1 times [2021-08-29 13:45:53,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:45:53,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207325477] [2021-08-29 13:45:53,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:45:53,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:45:53,137 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:45:53,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352084389] [2021-08-29 13:45:53,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:45:53,143 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:45:53,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:45:53,144 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 13:45:53,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 13:45:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:45:53,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-29 13:45:53,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:45:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:45:53,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 13:45:53,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:45:53,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207325477] [2021-08-29 13:45:53,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:45:53,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352084389] [2021-08-29 13:45:53,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352084389] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:45:53,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:45:53,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 13:45:53,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892480212] [2021-08-29 13:45:53,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 13:45:53,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:45:53,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 13:45:53,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 13:45:53,331 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:45:53,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:45:53,419 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2021-08-29 13:45:53,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 13:45:53,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-29 13:45:53,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:45:53,423 INFO L225 Difference]: With dead ends: 63 [2021-08-29 13:45:53,426 INFO L226 Difference]: Without dead ends: 52 [2021-08-29 13:45:53,427 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.66ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 13:45:53,429 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.92ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.27ms IncrementalHoareTripleChecker+Time [2021-08-29 13:45:53,431 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 90 Unknown, 0 Unchecked, 2.92ms Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 66.27ms Time] [2021-08-29 13:45:53,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-08-29 13:45:53,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-08-29 13:45:53,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 45 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:45:53,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2021-08-29 13:45:53,450 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2021-08-29 13:45:53,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:45:53,455 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2021-08-29 13:45:53,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:45:53,455 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2021-08-29 13:45:53,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-29 13:45:53,456 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:45:53,456 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:45:53,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 13:45:53,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:45:53,661 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:45:53,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:45:53,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1907209632, now seen corresponding path program 1 times [2021-08-29 13:45:53,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:45:53,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134629637] [2021-08-29 13:45:53,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:45:53,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:45:53,672 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:45:53,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232809445] [2021-08-29 13:45:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:45:53,673 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:45:53,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:45:53,674 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 13:45:53,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 13:45:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:45:53,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-29 13:45:53,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:45:53,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:45:53,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:45:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-29 13:45:53,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:45:53,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134629637] [2021-08-29 13:45:53,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:45:53,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232809445] [2021-08-29 13:45:53,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232809445] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 13:45:53,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 13:45:53,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-08-29 13:45:53,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218993451] [2021-08-29 13:45:53,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 13:45:53,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:45:53,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 13:45:53,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-29 13:45:53,941 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 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) [2021-08-29 13:45:54,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:45:54,119 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2021-08-29 13:45:54,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-29 13:45:54,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 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 18 [2021-08-29 13:45:54,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:45:54,120 INFO L225 Difference]: With dead ends: 119 [2021-08-29 13:45:54,120 INFO L226 Difference]: Without dead ends: 82 [2021-08-29 13:45:54,120 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 49.08ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-29 13:45:54,121 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 45 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.78ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 128.13ms IncrementalHoareTripleChecker+Time [2021-08-29 13:45:54,121 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 0 Invalid, 177 Unknown, 0 Unchecked, 4.78ms Time], IncrementalHoareTripleChecker [22 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 128.13ms Time] [2021-08-29 13:45:54,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-08-29 13:45:54,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 68. [2021-08-29 13:45:54,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 64 states have (on average 1.171875) internal successors, (75), 67 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:45:54,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2021-08-29 13:45:54,130 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 18 [2021-08-29 13:45:54,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:45:54,130 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2021-08-29 13:45:54,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 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) [2021-08-29 13:45:54,130 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2021-08-29 13:45:54,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-29 13:45:54,131 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:45:54,131 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:45:54,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 13:45:54,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:45:54,357 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:45:54,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:45:54,357 INFO L82 PathProgramCache]: Analyzing trace with hash 115055918, now seen corresponding path program 1 times [2021-08-29 13:45:54,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:45:54,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406235648] [2021-08-29 13:45:54,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:45:54,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:45:54,370 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:45:54,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276382405] [2021-08-29 13:45:54,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:45:54,371 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:45:54,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:45:54,380 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 13:45:54,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-29 13:45:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:45:54,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-29 13:45:54,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:45:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:45:54,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:45:56,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:45:56,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:45:56,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406235648] [2021-08-29 13:45:56,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:45:56,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276382405] [2021-08-29 13:45:56,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276382405] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 13:45:56,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 13:45:56,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-29 13:45:56,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55204289] [2021-08-29 13:45:56,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 13:45:56,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:45:56,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 13:45:56,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-29 13:45:56,005 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:46:01,301 WARN L210 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-08-29 13:46:06,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 13:46:09,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 13:46:09,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:46:09,476 INFO L93 Difference]: Finished difference Result 123 states and 136 transitions. [2021-08-29 13:46:09,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-29 13:46:09,476 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 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 [2021-08-29 13:46:09,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:46:09,478 INFO L225 Difference]: With dead ends: 123 [2021-08-29 13:46:09,478 INFO L226 Difference]: Without dead ends: 119 [2021-08-29 13:46:09,479 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 8981.96ms TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-08-29 13:46:09,479 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 116 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 71 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4515.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.38ms SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4553.88ms IncrementalHoareTripleChecker+Time [2021-08-29 13:46:09,480 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 0 Invalid, 291 Unknown, 0 Unchecked, 3.38ms Time], IncrementalHoareTripleChecker [71 Valid, 219 Invalid, 1 Unknown, 0 Unchecked, 4553.88ms Time] [2021-08-29 13:46:09,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-08-29 13:46:09,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 84. [2021-08-29 13:46:09,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 80 states have (on average 1.1875) internal successors, (95), 83 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:46:09,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2021-08-29 13:46:09,492 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 27 [2021-08-29 13:46:09,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:46:09,492 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2021-08-29 13:46:09,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:46:09,493 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2021-08-29 13:46:09,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-29 13:46:09,494 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:46:09,494 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:46:09,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-29 13:46:09,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:46:09,701 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:46:09,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:46:09,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1492250324, now seen corresponding path program 1 times [2021-08-29 13:46:09,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:46:09,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886916624] [2021-08-29 13:46:09,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:46:09,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:46:09,728 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:46:09,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26343312] [2021-08-29 13:46:09,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:46:09,728 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:46:09,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:46:09,733 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 13:46:09,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-29 13:46:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:46:09,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-29 13:46:09,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:46:10,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:46:10,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:46:10,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:46:10,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:46:10,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886916624] [2021-08-29 13:46:10,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:46:10,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26343312] [2021-08-29 13:46:10,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26343312] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 13:46:10,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 13:46:10,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-08-29 13:46:10,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207000778] [2021-08-29 13:46:10,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-29 13:46:10,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:46:10,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-29 13:46:10,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-29 13:46:10,808 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:46:11,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:46:11,245 INFO L93 Difference]: Finished difference Result 108 states and 122 transitions. [2021-08-29 13:46:11,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-29 13:46:11,246 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-08-29 13:46:11,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:46:11,247 INFO L225 Difference]: With dead ends: 108 [2021-08-29 13:46:11,247 INFO L226 Difference]: Without dead ends: 93 [2021-08-29 13:46:11,247 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 301.86ms TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2021-08-29 13:46:11,248 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 69 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 165.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 194.50ms IncrementalHoareTripleChecker+Time [2021-08-29 13:46:11,248 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 0 Invalid, 236 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [28 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 194.50ms Time] [2021-08-29 13:46:11,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-29 13:46:11,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 72. [2021-08-29 13:46:11,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 71 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:46:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2021-08-29 13:46:11,259 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 83 transitions. Word has length 32 [2021-08-29 13:46:11,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:46:11,260 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 83 transitions. [2021-08-29 13:46:11,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:46:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 83 transitions. [2021-08-29 13:46:11,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-29 13:46:11,261 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:46:11,261 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:46:11,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-29 13:46:11,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:46:11,471 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:46:11,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:46:11,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1713110809, now seen corresponding path program 1 times [2021-08-29 13:46:11,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:46:11,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518655837] [2021-08-29 13:46:11,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:46:11,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:46:11,481 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:46:11,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823860934] [2021-08-29 13:46:11,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:46:11,481 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:46:11,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:46:11,493 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 13:46:11,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-29 13:46:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:46:11,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-29 13:46:11,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:46:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:46:11,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 13:46:11,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:46:11,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518655837] [2021-08-29 13:46:11,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:46:11,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823860934] [2021-08-29 13:46:11,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823860934] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:46:11,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:46:11,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 13:46:11,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682047221] [2021-08-29 13:46:11,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 13:46:11,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:46:11,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 13:46:11,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-29 13:46:11,643 INFO L87 Difference]: Start difference. First operand 72 states and 83 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:46:11,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:46:11,724 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2021-08-29 13:46:11,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 13:46:11,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-08-29 13:46:11,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:46:11,725 INFO L225 Difference]: With dead ends: 79 [2021-08-29 13:46:11,726 INFO L226 Difference]: Without dead ends: 73 [2021-08-29 13:46:11,726 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.34ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-29 13:46:11,726 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.58ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.46ms IncrementalHoareTripleChecker+Time [2021-08-29 13:46:11,727 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 96 Unknown, 0 Unchecked, 0.58ms Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 69.46ms Time] [2021-08-29 13:46:11,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-29 13:46:11,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-08-29 13:46:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 72 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:46:11,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2021-08-29 13:46:11,738 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 35 [2021-08-29 13:46:11,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:46:11,739 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2021-08-29 13:46:11,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:46:11,739 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2021-08-29 13:46:11,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-29 13:46:11,740 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:46:11,740 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:46:11,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-29 13:46:11,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:46:11,954 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:46:11,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:46:11,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1415019748, now seen corresponding path program 1 times [2021-08-29 13:46:11,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:46:11,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723689116] [2021-08-29 13:46:11,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:46:11,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:46:11,965 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:46:11,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705561565] [2021-08-29 13:46:11,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:46:11,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:46:11,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:46:11,975 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 13:46:11,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-29 13:46:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:46:12,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-29 13:46:12,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:46:12,264 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-29 13:46:12,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 13:46:12,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:46:12,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723689116] [2021-08-29 13:46:12,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:46:12,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705561565] [2021-08-29 13:46:12,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705561565] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:46:12,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:46:12,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 13:46:12,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542951337] [2021-08-29 13:46:12,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 13:46:12,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:46:12,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 13:46:12,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 13:46:12,267 INFO L87 Difference]: Start difference. First operand 73 states and 82 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) [2021-08-29 13:46:12,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:46:12,443 INFO L93 Difference]: Finished difference Result 114 states and 127 transitions. [2021-08-29 13:46:12,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 13:46:12,443 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 40 [2021-08-29 13:46:12,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:46:12,444 INFO L225 Difference]: With dead ends: 114 [2021-08-29 13:46:12,444 INFO L226 Difference]: Without dead ends: 83 [2021-08-29 13:46:12,445 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 29.08ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-29 13:46:12,445 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.88ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 150.59ms IncrementalHoareTripleChecker+Time [2021-08-29 13:46:12,445 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 158 Unknown, 0 Unchecked, 0.88ms Time], IncrementalHoareTripleChecker [4 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 150.59ms Time] [2021-08-29 13:46:12,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-08-29 13:46:12,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2021-08-29 13:46:12,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 59 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:46:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2021-08-29 13:46:12,455 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 40 [2021-08-29 13:46:12,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:46:12,455 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2021-08-29 13:46:12,455 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) [2021-08-29 13:46:12,456 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2021-08-29 13:46:12,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-29 13:46:12,456 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:46:12,457 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:46:12,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-29 13:46:12,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:46:12,673 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:46:12,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:46:12,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1808046758, now seen corresponding path program 2 times [2021-08-29 13:46:12,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:46:12,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391502612] [2021-08-29 13:46:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:46:12,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:46:12,685 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:46:12,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974388114] [2021-08-29 13:46:12,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 13:46:12,686 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:46:12,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:46:12,687 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 13:46:12,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-29 13:46:12,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 13:46:12,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 13:46:12,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 39 conjunts are in the unsatisfiable core [2021-08-29 13:46:12,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:46:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:46:13,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:46:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:46:34,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:46:34,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391502612] [2021-08-29 13:46:34,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:46:34,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974388114] [2021-08-29 13:46:34,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974388114] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 13:46:34,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 13:46:34,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-08-29 13:46:34,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923927524] [2021-08-29 13:46:34,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-29 13:46:34,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:46:34,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-29 13:46:34,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-08-29 13:46:34,979 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:47:10,735 WARN L210 SmtUtils]: Spent 35.45s on a formula simplification. DAG size of input: 167 DAG size of output: 101 [2021-08-29 13:48:05,766 WARN L210 SmtUtils]: Spent 54.47s on a formula simplification. DAG size of input: 165 DAG size of output: 99 [2021-08-29 13:48:14,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:48:14,962 INFO L93 Difference]: Finished difference Result 186 states and 219 transitions. [2021-08-29 13:48:14,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-29 13:48:14,962 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 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 40 [2021-08-29 13:48:14,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:48:14,963 INFO L225 Difference]: With dead ends: 186 [2021-08-29 13:48:14,963 INFO L226 Difference]: Without dead ends: 153 [2021-08-29 13:48:14,964 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 98101.91ms TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2021-08-29 13:48:14,964 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 280 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4978.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.47ms SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5062.57ms IncrementalHoareTripleChecker+Time [2021-08-29 13:48:14,965 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 0 Invalid, 727 Unknown, 0 Unchecked, 5.47ms Time], IncrementalHoareTripleChecker [183 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 5062.57ms Time] [2021-08-29 13:48:14,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-08-29 13:48:14,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 101. [2021-08-29 13:48:14,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 97 states have (on average 1.1649484536082475) internal successors, (113), 100 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:48:14,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2021-08-29 13:48:14,979 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 40 [2021-08-29 13:48:14,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:48:14,979 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2021-08-29 13:48:14,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:48:14,980 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2021-08-29 13:48:14,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-29 13:48:14,980 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:48:14,981 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:48:14,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-08-29 13:48:15,185 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,SelfDestructingSolverStorable10 [2021-08-29 13:48:15,185 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:48:15,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:48:15,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1273273436, now seen corresponding path program 2 times [2021-08-29 13:48:15,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:48:15,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110465956] [2021-08-29 13:48:15,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:48:15,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:48:15,193 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:48:15,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789080353] [2021-08-29 13:48:15,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 13:48:15,194 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:48:15,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:48:15,205 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) [2021-08-29 13:48:15,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-29 13:48:15,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-29 13:48:15,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 13:48:15,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-29 13:48:15,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:48:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-08-29 13:48:15,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:48:15,570 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-08-29 13:48:15,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:48:15,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110465956] [2021-08-29 13:48:15,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:48:15,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789080353] [2021-08-29 13:48:15,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789080353] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-29 13:48:15,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-29 13:48:15,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2021-08-29 13:48:15,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613285093] [2021-08-29 13:48:15,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-29 13:48:15,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:48:15,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-29 13:48:15,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-08-29 13:48:15,572 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:48:15,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:48:15,754 INFO L93 Difference]: Finished difference Result 115 states and 127 transitions. [2021-08-29 13:48:15,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-29 13:48:15,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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 [2021-08-29 13:48:15,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:48:15,756 INFO L225 Difference]: With dead ends: 115 [2021-08-29 13:48:15,756 INFO L226 Difference]: Without dead ends: 111 [2021-08-29 13:48:15,756 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 192.02ms TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2021-08-29 13:48:15,757 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 92 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.79ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.70ms IncrementalHoareTripleChecker+Time [2021-08-29 13:48:15,757 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 0 Invalid, 124 Unknown, 0 Unchecked, 0.79ms Time], IncrementalHoareTripleChecker [23 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 80.70ms Time] [2021-08-29 13:48:15,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-08-29 13:48:15,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 95. [2021-08-29 13:48:15,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 92 states have (on average 1.1304347826086956) internal successors, (104), 94 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:48:15,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2021-08-29 13:48:15,773 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 45 [2021-08-29 13:48:15,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:48:15,773 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2021-08-29 13:48:15,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:48:15,774 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2021-08-29 13:48:15,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-29 13:48:15,777 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:48:15,777 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:48:15,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-29 13:48:15,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:48:15,996 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:48:15,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:48:15,996 INFO L82 PathProgramCache]: Analyzing trace with hash -449748929, now seen corresponding path program 1 times [2021-08-29 13:48:15,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:48:15,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701692792] [2021-08-29 13:48:15,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:48:15,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:48:16,004 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:48:16,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260573824] [2021-08-29 13:48:16,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:48:16,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:48:16,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:48:16,013 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) [2021-08-29 13:48:16,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-29 13:48:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:48:16,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-29 13:48:16,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:48:16,308 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:48:16,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:48:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:48:17,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:48:17,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701692792] [2021-08-29 13:48:17,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:48:17,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260573824] [2021-08-29 13:48:17,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260573824] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 13:48:17,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 13:48:17,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-29 13:48:17,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655771979] [2021-08-29 13:48:17,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 13:48:17,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:48:17,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 13:48:17,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-29 13:48:17,187 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 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) [2021-08-29 13:48:17,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:48:17,494 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2021-08-29 13:48:17,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 13:48:17,494 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 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) Word has length 47 [2021-08-29 13:48:17,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:48:17,495 INFO L225 Difference]: With dead ends: 106 [2021-08-29 13:48:17,495 INFO L226 Difference]: Without dead ends: 100 [2021-08-29 13:48:17,495 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 98.38ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-29 13:48:17,496 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 236.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 283.55ms IncrementalHoareTripleChecker+Time [2021-08-29 13:48:17,496 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 315 Unknown, 0 Unchecked, 0.92ms Time], IncrementalHoareTripleChecker [0 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 283.55ms Time] [2021-08-29 13:48:17,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-08-29 13:48:17,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-08-29 13:48:17,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 97 states have (on average 1.1237113402061856) internal successors, (109), 99 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:48:17,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2021-08-29 13:48:17,511 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 47 [2021-08-29 13:48:17,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:48:17,511 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions. [2021-08-29 13:48:17,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 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) [2021-08-29 13:48:17,512 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions. [2021-08-29 13:48:17,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-29 13:48:17,513 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:48:17,513 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:48:17,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-29 13:48:17,728 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,SelfDestructingSolverStorable12 [2021-08-29 13:48:17,729 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:48:17,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:48:17,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1704667892, now seen corresponding path program 1 times [2021-08-29 13:48:17,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:48:17,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80867850] [2021-08-29 13:48:17,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:48:17,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:48:17,736 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:48:17,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1580589582] [2021-08-29 13:48:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:48:17,737 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:48:17,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:48:17,747 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) [2021-08-29 13:48:17,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-29 13:48:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:48:17,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-29 13:48:17,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:48:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:48:17,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:48:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 33 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:48:18,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:48:18,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80867850] [2021-08-29 13:48:18,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:48:18,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580589582] [2021-08-29 13:48:18,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580589582] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 13:48:18,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 13:48:18,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-29 13:48:18,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950800256] [2021-08-29 13:48:18,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 13:48:18,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:48:18,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 13:48:18,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-29 13:48:18,121 INFO L87 Difference]: Start difference. First operand 100 states and 109 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:48:18,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:48:18,245 INFO L93 Difference]: Finished difference Result 123 states and 134 transitions. [2021-08-29 13:48:18,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 13:48:18,245 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 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 [2021-08-29 13:48:18,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:48:18,245 INFO L225 Difference]: With dead ends: 123 [2021-08-29 13:48:18,246 INFO L226 Difference]: Without dead ends: 66 [2021-08-29 13:48:18,246 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 40.55ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-29 13:48:18,247 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.77ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.58ms IncrementalHoareTripleChecker+Time [2021-08-29 13:48:18,247 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 253 Unknown, 0 Unchecked, 0.77ms Time], IncrementalHoareTripleChecker [7 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 109.58ms Time] [2021-08-29 13:48:18,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-29 13:48:18,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-08-29 13:48:18,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 63 states have (on average 1.0952380952380953) internal successors, (69), 65 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:48:18,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-08-29 13:48:18,259 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 53 [2021-08-29 13:48:18,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:48:18,259 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-08-29 13:48:18,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:48:18,259 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-08-29 13:48:18,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-29 13:48:18,260 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:48:18,260 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:48:18,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-29 13:48:18,489 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,SelfDestructingSolverStorable13 [2021-08-29 13:48:18,489 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:48:18,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:48:18,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1035196506, now seen corresponding path program 2 times [2021-08-29 13:48:18,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:48:18,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358913927] [2021-08-29 13:48:18,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:48:18,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:48:18,496 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:48:18,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125168321] [2021-08-29 13:48:18,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 13:48:18,497 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:48:18,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:48:18,498 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) [2021-08-29 13:48:18,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-29 13:48:18,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 13:48:18,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 13:48:18,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 51 conjunts are in the unsatisfiable core [2021-08-29 13:48:18,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:48:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:48:19,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:48:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:48:52,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:48:52,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358913927] [2021-08-29 13:48:52,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:48:52,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125168321] [2021-08-29 13:48:52,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125168321] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 13:48:52,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 13:48:52,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-08-29 13:48:52,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372064583] [2021-08-29 13:48:52,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-29 13:48:52,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:48:52,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-29 13:48:52,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-08-29 13:48:52,479 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 22 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:49:37,869 WARN L210 SmtUtils]: Spent 44.79s on a formula simplification. DAG size of input: 248 DAG size of output: 187 [2021-08-29 13:49:45,089 WARN L210 SmtUtils]: Spent 6.12s on a formula simplification that was a NOOP. DAG size: 191 [2021-08-29 13:50:15,520 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse32 (div c_ULTIMATE.start_main_~p~0 2))) (let ((.cse31 (+ .cse32 1))) (let ((.cse9 (div c_ULTIMATE.start_main_~d~0 2)) (.cse12 (= (mod .cse31 2) 0)) (.cse20 (= (mod .cse32 2) 0)) (.cse0 (< c_ULTIMATE.start_main_~p~0 0)) (.cse16 (= (mod c_ULTIMATE.start_main_~p~0 2) 0))) (let ((.cse3 (* .cse32 c_ULTIMATE.start_main_~B~0)) (.cse10 (= c_ULTIMATE.start_main_~p~0 1)) (.cse17 (= .cse32 1)) (.cse22 (and .cse0 (not .cse16))) (.cse19 (and (< .cse32 0) (not .cse20))) (.cse18 (* (div .cse32 2) c_ULTIMATE.start_main_~B~0)) (.cse21 (<= 0 .cse32)) (.cse15 (not .cse12)) (.cse13 (* (div .cse31 2) c_ULTIMATE.start_main_~B~0)) (.cse7 (* c_ULTIMATE.start_main_~p~0 c_ULTIMATE.start_main_~B~0)) (.cse6 (<= 0 c_ULTIMATE.start_main_~p~0)) (.cse23 (div .cse9 2)) (.cse11 (div (+ (- 2) .cse9) 2)) (.cse5 (* c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~B~0))) (and (let ((.cse8 (* 2 c_ULTIMATE.start_main_~d~0))) (or (let ((.cse2 (+ c_ULTIMATE.start_main_~A~0 .cse8 .cse9)) (.cse4 (* 2 .cse7)) (.cse1 (= (mod (div (* 2 c_ULTIMATE.start_main_~p~0) 2) 2) 0))) (and (or (and .cse0 (not .cse1)) (= .cse2 (+ .cse3 c_ULTIMATE.start_main_~r~0 .cse4 .cse5))) (or (= .cse2 (+ .cse3 c_ULTIMATE.start_main_~B~0 c_ULTIMATE.start_main_~r~0 .cse4 .cse5)) .cse6 .cse1))) .cse10 (<= (* 3 c_ULTIMATE.start_main_~d~0) c_ULTIMATE.start_main_~r~0) (<= c_ULTIMATE.start_main_~r~0 (+ .cse8 (div (+ c_ULTIMATE.start_main_~d~0 (- 2)) 2))))) (or (= (+ c_ULTIMATE.start_main_~A~0 c_ULTIMATE.start_main_~d~0) (+ c_ULTIMATE.start_main_~r~0 .cse7 .cse5)) (< c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~d~0)) (<= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) (or (<= c_ULTIMATE.start_main_~r~0 .cse11) (let ((.cse14 (+ c_ULTIMATE.start_main_~A~0 .cse23))) (and (or (and (or .cse12 (= (+ .cse13 c_ULTIMATE.start_main_~B~0 c_ULTIMATE.start_main_~r~0 .cse5) .cse14)) (or .cse15 (= .cse14 (+ .cse13 c_ULTIMATE.start_main_~r~0 .cse5)))) .cse16 .cse6) (or .cse17 (and (or (= .cse14 (+ c_ULTIMATE.start_main_~r~0 .cse18 .cse5)) .cse19) (or .cse20 .cse21 (= .cse14 (+ c_ULTIMATE.start_main_~B~0 c_ULTIMATE.start_main_~r~0 .cse18 .cse5)))) .cse22))) (<= .cse9 c_ULTIMATE.start_main_~r~0)) (let ((.cse24 (* 5 c_ULTIMATE.start_main_~d~0))) (or (= (+ c_ULTIMATE.start_main_~r~0 (* 5 .cse7) .cse5) (+ c_ULTIMATE.start_main_~A~0 .cse24)) (<= (* 6 c_ULTIMATE.start_main_~d~0) c_ULTIMATE.start_main_~r~0) (<= (+ c_ULTIMATE.start_main_~r~0 1) .cse24))) (or (let ((.cse25 (= (mod c_ULTIMATE.start_main_~d~0 2) 0)) (.cse27 (+ .cse3 c_ULTIMATE.start_main_~B~0 c_ULTIMATE.start_main_~r~0 .cse5)) (.cse28 (+ .cse3 c_ULTIMATE.start_main_~r~0 .cse5))) (and (or (<= 0 c_ULTIMATE.start_main_~d~0) .cse25 (let ((.cse26 (+ c_ULTIMATE.start_main_~A~0 .cse9 1))) (and (or (= .cse26 .cse27) .cse16 .cse6) (or (= .cse26 .cse28) .cse22))) (< c_ULTIMATE.start_main_~r~0 (+ .cse9 1))) (or (and (< c_ULTIMATE.start_main_~d~0 0) (not .cse25)) (let ((.cse29 (+ c_ULTIMATE.start_main_~A~0 .cse9))) (and (or (= .cse29 .cse27) .cse16 .cse6) (or (= .cse29 .cse28) .cse22))) (< c_ULTIMATE.start_main_~r~0 .cse9)))) .cse10) (or (let ((.cse30 (+ c_ULTIMATE.start_main_~A~0 c_ULTIMATE.start_main_~d~0 .cse23))) (and (or .cse17 .cse22 (and (or (= .cse30 (+ c_ULTIMATE.start_main_~r~0 .cse7 .cse18 .cse5)) .cse19) (or (= .cse30 (+ c_ULTIMATE.start_main_~B~0 c_ULTIMATE.start_main_~r~0 .cse7 .cse18 .cse5)) .cse20 .cse21))) (or (and (or .cse15 (= .cse30 (+ .cse13 c_ULTIMATE.start_main_~r~0 .cse7 .cse5))) (or .cse12 (= .cse30 (+ .cse13 c_ULTIMATE.start_main_~B~0 c_ULTIMATE.start_main_~r~0 .cse7 .cse5)))) .cse16 .cse6))) (<= (+ c_ULTIMATE.start_main_~d~0 .cse9) c_ULTIMATE.start_main_~r~0) (<= c_ULTIMATE.start_main_~r~0 (+ c_ULTIMATE.start_main_~d~0 .cse11))) (= c_ULTIMATE.start_main_~A~0 (+ c_ULTIMATE.start_main_~r~0 .cse5))))))) is different from false [2021-08-29 13:50:33,566 WARN L210 SmtUtils]: Spent 10.44s on a formula simplification that was a NOOP. DAG size: 113 [2021-08-29 13:50:57,347 WARN L210 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 74 [2021-08-29 13:51:26,410 WARN L210 SmtUtils]: Spent 12.31s on a formula simplification that was a NOOP. DAG size: 148 [2021-08-29 13:51:30,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:51:30,727 INFO L93 Difference]: Finished difference Result 304 states and 333 transitions. [2021-08-29 13:51:30,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-29 13:51:30,728 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 22 states have internal predecessors, (101), 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 [2021-08-29 13:51:30,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:51:30,729 INFO L225 Difference]: With dead ends: 304 [2021-08-29 13:51:30,730 INFO L226 Difference]: Without dead ends: 277 [2021-08-29 13:51:30,731 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 155183.27ms TimeCoverageRelationStatistics Valid=918, Invalid=2276, Unknown=2, NotChecked=110, Total=3306 [2021-08-29 13:51:30,732 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 458 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7801.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.32ms SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 506 IncrementalHoareTripleChecker+Unchecked, 8094.33ms IncrementalHoareTripleChecker+Time [2021-08-29 13:51:30,732 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 0 Invalid, 1949 Unknown, 0 Unchecked, 9.32ms Time], IncrementalHoareTripleChecker [260 Valid, 1183 Invalid, 0 Unknown, 506 Unchecked, 8094.33ms Time] [2021-08-29 13:51:30,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-08-29 13:51:30,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 175. [2021-08-29 13:51:30,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 172 states have (on average 1.186046511627907) internal successors, (204), 174 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:51:30,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 204 transitions. [2021-08-29 13:51:30,788 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 204 transitions. Word has length 53 [2021-08-29 13:51:30,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:51:30,788 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 204 transitions. [2021-08-29 13:51:30,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 22 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:51:30,789 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 204 transitions. [2021-08-29 13:51:30,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-29 13:51:30,789 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:51:30,790 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:51:30,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-29 13:51:31,004 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,SelfDestructingSolverStorable14 [2021-08-29 13:51:31,005 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:51:31,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:51:31,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1518143050, now seen corresponding path program 2 times [2021-08-29 13:51:31,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:51:31,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347659513] [2021-08-29 13:51:31,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:51:31,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:51:31,011 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:51:31,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469094003] [2021-08-29 13:51:31,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 13:51:31,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:51:31,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:51:31,013 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) [2021-08-29 13:51:31,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-29 13:51:31,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-29 13:51:31,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 13:51:31,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-29 13:51:31,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:51:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-08-29 13:51:31,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 13:51:31,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:51:31,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347659513] [2021-08-29 13:51:31,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:51:31,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469094003] [2021-08-29 13:51:31,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469094003] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:51:31,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:51:31,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-29 13:51:31,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950978611] [2021-08-29 13:51:31,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 13:51:31,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:51:31,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 13:51:31,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-29 13:51:31,213 INFO L87 Difference]: Start difference. First operand 175 states and 204 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:51:31,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:51:31,355 INFO L93 Difference]: Finished difference Result 175 states and 204 transitions. [2021-08-29 13:51:31,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 13:51:31,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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 54 [2021-08-29 13:51:31,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:51:31,356 INFO L225 Difference]: With dead ends: 175 [2021-08-29 13:51:31,356 INFO L226 Difference]: Without dead ends: 167 [2021-08-29 13:51:31,357 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 72.86ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-08-29 13:51:31,357 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.45ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.54ms IncrementalHoareTripleChecker+Time [2021-08-29 13:51:31,358 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 99 Unknown, 0 Unchecked, 0.45ms Time], IncrementalHoareTripleChecker [20 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 57.54ms Time] [2021-08-29 13:51:31,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-08-29 13:51:31,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 143. [2021-08-29 13:51:31,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.1126760563380282) internal successors, (158), 142 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) [2021-08-29 13:51:31,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 158 transitions. [2021-08-29 13:51:31,402 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 158 transitions. Word has length 54 [2021-08-29 13:51:31,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:51:31,402 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 158 transitions. [2021-08-29 13:51:31,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:51:31,402 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 158 transitions. [2021-08-29 13:51:31,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-08-29 13:51:31,403 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:51:31,403 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:51:31,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-29 13:51:31,604 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,SelfDestructingSolverStorable15 [2021-08-29 13:51:31,605 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:51:31,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:51:31,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1368222229, now seen corresponding path program 3 times [2021-08-29 13:51:31,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:51:31,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238147023] [2021-08-29 13:51:31,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:51:31,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:51:31,613 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:51:31,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865184456] [2021-08-29 13:51:31,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-29 13:51:31,613 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:51:31,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:51:31,633 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) [2021-08-29 13:51:31,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-29 13:51:31,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-29 13:51:31,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 13:51:31,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-29 13:51:31,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:51:32,181 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-08-29 13:51:32,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:52:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 20 refuted. 3 times theorem prover too weak. 63 trivial. 0 not checked. [2021-08-29 13:52:12,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:52:12,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238147023] [2021-08-29 13:52:12,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:52:12,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865184456] [2021-08-29 13:52:12,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865184456] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 13:52:12,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 13:52:12,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2021-08-29 13:52:12,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145412013] [2021-08-29 13:52:12,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-29 13:52:12,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:52:12,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-29 13:52:12,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=154, Unknown=1, NotChecked=0, Total=210 [2021-08-29 13:52:12,762 INFO L87 Difference]: Start difference. First operand 143 states and 158 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:52:12,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:52:12,921 INFO L93 Difference]: Finished difference Result 143 states and 158 transitions. [2021-08-29 13:52:12,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 13:52:12,922 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 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 59 [2021-08-29 13:52:12,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:52:12,922 INFO L225 Difference]: With dead ends: 143 [2021-08-29 13:52:12,922 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 13:52:12,923 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3265.16ms TimeCoverageRelationStatistics Valid=70, Invalid=169, Unknown=1, NotChecked=0, Total=240 [2021-08-29 13:52:12,923 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.41ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 64.27ms IncrementalHoareTripleChecker+Time [2021-08-29 13:52:12,924 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 90 Unknown, 0 Unchecked, 0.41ms Time], IncrementalHoareTripleChecker [31 Valid, 53 Invalid, 0 Unknown, 6 Unchecked, 64.27ms Time] [2021-08-29 13:52:12,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 13:52:12,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 13:52:12,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:52:12,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 13:52:12,925 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-08-29 13:52:12,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:52:12,925 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 13:52:12,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:52:12,925 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 13:52:12,925 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 13:52:12,927 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-08-29 13:52:12,928 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-08-29 13:52:12,928 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2021-08-29 13:52:12,928 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2021-08-29 13:52:12,928 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2021-08-29 13:52:12,929 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2021-08-29 13:52:12,929 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-08-29 13:52:12,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-29 13:52:13,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:52:13,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 13:52:13,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 13:52:13,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 13:52:13,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 13:52:13,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 13:52:13,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 13:52:13,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 13:52:13,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 13:52:14,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 13:52:14,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 13:52:22,753 WARN L210 SmtUtils]: Spent 8.53s on a formula simplification. DAG size of input: 430 DAG size of output: 65 [2021-08-29 13:52:30,933 WARN L210 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 257 DAG size of output: 33 [2021-08-29 13:52:52,515 WARN L210 SmtUtils]: Spent 21.58s on a formula simplification. DAG size of input: 442 DAG size of output: 73 [2021-08-29 13:53:04,282 WARN L210 SmtUtils]: Spent 11.77s on a formula simplification. DAG size of input: 312 DAG size of output: 38 [2021-08-29 13:53:16,717 WARN L210 SmtUtils]: Spent 12.43s on a formula simplification. DAG size of input: 311 DAG size of output: 38 [2021-08-29 13:53:24,807 WARN L210 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 313 DAG size of output: 38 [2021-08-29 13:53:38,238 WARN L210 SmtUtils]: Spent 13.43s on a formula simplification. DAG size of input: 311 DAG size of output: 38 [2021-08-29 13:53:38,242 INFO L861 garLoopResultBuilder]: At program point L60(lines 22 61) the Hoare annotation is: true [2021-08-29 13:53:38,242 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 13:53:38,242 INFO L858 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2021-08-29 13:53:38,242 INFO L858 garLoopResultBuilder]: For program point L52-2(lines 22 61) no Hoare annotation was computed. [2021-08-29 13:53:38,242 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-08-29 13:53:38,242 INFO L858 garLoopResultBuilder]: For program point L44-1(lines 44 56) no Hoare annotation was computed. [2021-08-29 13:53:38,242 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 13:53:38,242 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 13:53:38,242 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 13:53:38,242 INFO L858 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-08-29 13:53:38,242 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 13:53:38,242 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 13:53:38,243 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 13:53:38,243 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-08-29 13:53:38,243 INFO L854 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse4 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0))) (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse2 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 .cse4)))) (or (and .cse0 (= ULTIMATE.start_main_~p~0 1) .cse1 (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse2) (and .cse0 (= ULTIMATE.start_main_~d~0 2) .cse1 (= ULTIMATE.start_main_~p~0 2) (= ULTIMATE.start_main_~d~0 (* 2 ULTIMATE.start_main_~B~0)) .cse2) (let ((.cse3 (div ULTIMATE.start_main_~d~0 2))) (and (= (mod ULTIMATE.start_main_~d~0 2) 0) .cse0 (<= .cse3 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~B~0 1) (= (+ ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~d~0) (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0) .cse4)) .cse1 (<= 1 (div .cse3 2)) .cse2))))) [2021-08-29 13:53:38,243 INFO L858 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-08-29 13:53:38,243 INFO L854 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse4 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0))) (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse2 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 .cse4)))) (or (and .cse0 (= ULTIMATE.start_main_~p~0 1) .cse1 (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse2) (and .cse0 (= ULTIMATE.start_main_~d~0 2) .cse1 (= ULTIMATE.start_main_~p~0 2) (= ULTIMATE.start_main_~d~0 (* 2 ULTIMATE.start_main_~B~0)) .cse2) (let ((.cse3 (div ULTIMATE.start_main_~d~0 2))) (and (= (mod ULTIMATE.start_main_~d~0 2) 0) .cse0 (<= .cse3 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~B~0 1) (= (+ ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~d~0) (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0) .cse4)) .cse1 (<= 1 (div .cse3 2)) .cse2))))) [2021-08-29 13:53:38,243 INFO L858 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-08-29 13:53:38,243 INFO L854 garLoopResultBuilder]: At program point L15-8(line 38) the Hoare annotation is: (let ((.cse4 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0))) (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse2 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 .cse4)))) (or (and (= ULTIMATE.start_main_~d~0 2) .cse0 .cse1 (= ULTIMATE.start_main_~p~0 2) (= ULTIMATE.start_main_~d~0 (* 2 ULTIMATE.start_main_~B~0)) .cse2) (and (= ULTIMATE.start_main_~p~0 1) .cse0 .cse1 (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse2) (let ((.cse3 (div ULTIMATE.start_main_~d~0 2))) (and (= (mod ULTIMATE.start_main_~d~0 2) 0) (<= .cse3 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~B~0 1) .cse0 (= (+ ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~d~0) (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0) .cse4)) .cse1 (<= 1 (div .cse3 2)) .cse2))))) [2021-08-29 13:53:38,244 INFO L858 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-08-29 13:53:38,244 INFO L854 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse13 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0)) (.cse12 (* 2 ULTIMATE.start_main_~B~0))) (let ((.cse3 (= ULTIMATE.start_main_~p~0 2)) (.cse4 (= ULTIMATE.start_main_~d~0 .cse12)) (.cse2 (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0)) (.cse11 (* 4 ULTIMATE.start_main_~B~0)) (.cse8 (div ULTIMATE.start_main_~q~0 2)) (.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse7 (= ULTIMATE.start_main_~q~0 0)) (.cse10 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)) (.cse1 (= ULTIMATE.start_main_~B~0 1)) (.cse9 (= (+ ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~d~0) (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0) .cse13))) (.cse5 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 .cse13)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 (= ULTIMATE.start_main_~d~0 2) .cse6 .cse7 .cse3 .cse4) (and .cse0 (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~p~0 .cse8) .cse1 (= (div (+ ULTIMATE.start_main_~A~0 (* ULTIMATE.start_main_~r~0 (- 1))) 2) ULTIMATE.start_main_~d~0) .cse5) (and .cse0 .cse1 .cse9 (= ULTIMATE.start_main_~q~0 3) .cse10 .cse5) (and .cse0 (= ULTIMATE.start_main_~d~0 .cse11) (<= (div ULTIMATE.start_main_~d~0 2) ULTIMATE.start_main_~r~0) .cse1 .cse9 .cse7 .cse5) (and .cse0 .cse2 .cse9 (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~q~0 1) .cse10) (and .cse0 .cse1 (<= 0 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 .cse11)) .cse10 (< ULTIMATE.start_main_~r~0 .cse12) (= (div .cse8 2) ULTIMATE.start_main_~p~0) .cse5) (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 1) .cse6 .cse7 .cse10) (and .cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse9 (<= 1 ULTIMATE.start_main_~p~0) .cse5)))) [2021-08-29 13:53:38,244 INFO L858 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-08-29 13:53:38,244 INFO L854 garLoopResultBuilder]: At program point L15-14(line 48) the Hoare annotation is: (let ((.cse12 (= ULTIMATE.start_main_~p~0 1)) (.cse13 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0)) (.cse18 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0)) (.cse17 (* 2 ULTIMATE.start_main_~B~0))) (let ((.cse3 (= ULTIMATE.start_main_~p~0 2)) (.cse4 (= ULTIMATE.start_main_~d~0 .cse17)) (.cse2 (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0)) (.cse9 (= (+ ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~d~0) (+ ULTIMATE.start_main_~r~0 .cse13 .cse18))) (.cse6 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse7 (= ULTIMATE.start_main_~q~0 0)) (.cse10 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)) (.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse14 (or (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~q~0))) (not .cse12))) (.cse1 (= ULTIMATE.start_main_~B~0 1)) (.cse15 (<= 1 ULTIMATE.start_main_~p~0)) (.cse11 (* 4 ULTIMATE.start_main_~B~0)) (.cse16 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (.cse8 (div ULTIMATE.start_main_~q~0 2)) (.cse5 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 .cse18)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 (= ULTIMATE.start_main_~d~0 2) .cse6 .cse7 .cse3 .cse4) (and .cse0 (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~p~0 .cse8) .cse1 (= (div (+ ULTIMATE.start_main_~A~0 (* ULTIMATE.start_main_~r~0 (- 1))) 2) ULTIMATE.start_main_~d~0) .cse5) (and .cse0 .cse1 .cse9 (= ULTIMATE.start_main_~q~0 3) .cse10 .cse5) (and .cse0 (= ULTIMATE.start_main_~d~0 .cse11) (<= (div ULTIMATE.start_main_~d~0 2) ULTIMATE.start_main_~r~0) .cse1 .cse9 .cse7 .cse5) (and .cse0 .cse2 .cse9 (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~q~0 1) .cse10) (and .cse0 .cse1 .cse12 .cse6 .cse7 .cse10) (and (= ULTIMATE.start_main_~d~0 .cse13) .cse14 .cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse15 .cse16 .cse5) (and .cse0 .cse14 .cse1 (<= 0 ULTIMATE.start_main_~r~0) .cse15 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 .cse11)) .cse16 (< ULTIMATE.start_main_~r~0 .cse17) (= (div .cse8 2) ULTIMATE.start_main_~p~0) .cse5)))) [2021-08-29 13:53:38,244 INFO L858 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-08-29 13:53:38,244 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 13:53:38,244 INFO L854 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0))) (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 (div ULTIMATE.start_main_~d~0 2)))) (not (= (div ULTIMATE.start_main_~p~0 2) 1))) (<= 1 ULTIMATE.start_main_~p~0) (<= 1 ULTIMATE.start_main_~B~0) .cse0 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0)))) (and (= ULTIMATE.start_main_~B~0 1) (= ULTIMATE.start_main_~p~0 1) .cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))))) [2021-08-29 13:53:38,244 INFO L858 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-08-29 13:53:38,244 INFO L861 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-08-29 13:53:38,244 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 13:53:38,244 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-08-29 13:53:38,244 INFO L858 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-08-29 13:53:38,245 INFO L858 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-08-29 13:53:38,245 INFO L858 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-08-29 13:53:38,245 INFO L858 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-08-29 13:53:38,245 INFO L858 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-08-29 13:53:38,245 INFO L858 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-08-29 13:53:38,245 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 13:53:38,245 INFO L854 garLoopResultBuilder]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse4 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0))) (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~q~0 0)) (.cse2 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~r~0 .cse4)))) (or (and (= ULTIMATE.start_main_~d~0 2) .cse0 .cse1 (= ULTIMATE.start_main_~p~0 2) (= ULTIMATE.start_main_~d~0 (* 2 ULTIMATE.start_main_~B~0)) .cse2) (let ((.cse3 (div ULTIMATE.start_main_~d~0 2))) (and (= (mod ULTIMATE.start_main_~d~0 2) 0) (<= .cse3 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~B~0 1) .cse0 (= (+ ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~d~0) (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0) .cse4)) .cse1 (<= 1 (div .cse3 2)) .cse2)) (and (= ULTIMATE.start_main_~p~0 1) .cse1 (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse2)))) [2021-08-29 13:53:38,245 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 13:53:38,248 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 13:53:38,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 01:53:38 BoogieIcfgContainer [2021-08-29 13:53:38,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 13:53:38,273 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 13:53:38,273 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 13:53:38,274 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 13:53:38,274 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:45:51" (3/4) ... [2021-08-29 13:53:38,277 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 13:53:38,285 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-08-29 13:53:38,286 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 13:53:38,286 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 13:53:38,286 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 13:53:38,375 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 13:53:38,375 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 13:53:38,376 INFO L158 Benchmark]: Toolchain (without parser) took 467324.36ms. Allocated memory was 54.5MB in the beginning and 100.7MB in the end (delta: 46.1MB). Free memory was 32.3MB in the beginning and 75.2MB in the end (delta: -42.9MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB. [2021-08-29 13:53:38,376 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory was 37.0MB in the beginning and 37.0MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:53:38,376 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.19ms. Allocated memory is still 54.5MB. Free memory was 32.1MB in the beginning and 35.6MB in the end (delta: -3.4MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-08-29 13:53:38,377 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.96ms. Allocated memory is still 54.5MB. Free memory was 35.6MB in the beginning and 34.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:53:38,377 INFO L158 Benchmark]: Boogie Preprocessor took 41.92ms. Allocated memory is still 54.5MB. Free memory was 33.9MB in the beginning and 32.7MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 13:53:38,377 INFO L158 Benchmark]: RCFGBuilder took 267.19ms. Allocated memory is still 54.5MB. Free memory was 32.7MB in the beginning and 23.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 13:53:38,381 INFO L158 Benchmark]: TraceAbstraction took 466585.33ms. Allocated memory was 54.5MB in the beginning and 100.7MB in the end (delta: 46.1MB). Free memory was 23.1MB in the beginning and 33.4MB in the end (delta: -10.2MB). Peak memory consumption was 50.8MB. Max. memory is 16.1GB. [2021-08-29 13:53:38,382 INFO L158 Benchmark]: Witness Printer took 101.93ms. Allocated memory is still 100.7MB. Free memory was 33.4MB in the beginning and 75.2MB in the end (delta: -41.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 13:53:38,386 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory was 37.0MB in the beginning and 37.0MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.19ms. Allocated memory is still 54.5MB. Free memory was 32.1MB in the beginning and 35.6MB in the end (delta: -3.4MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.96ms. Allocated memory is still 54.5MB. Free memory was 35.6MB in the beginning and 34.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.92ms. Allocated memory is still 54.5MB. Free memory was 33.9MB in the beginning and 32.7MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 267.19ms. Allocated memory is still 54.5MB. Free memory was 32.7MB in the beginning and 23.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 466585.33ms. Allocated memory was 54.5MB in the beginning and 100.7MB in the end (delta: 46.1MB). Free memory was 23.1MB in the beginning and 33.4MB in the end (delta: -10.2MB). Peak memory consumption was 50.8MB. Max. memory is 16.1GB. * Witness Printer took 101.93ms. Allocated memory is still 100.7MB. Free memory was 33.4MB in the beginning and 75.2MB in the end (delta: -41.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 466492.73ms, OverallIterations: 17, TraceHistogramMax: 5, EmptinessCheckTime: 24.16ms, AutomataDifference: 274092.03ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 85087.92ms, InitialAbstractionConstructionTime: 10.44ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 1328 SdHoareTripleChecker+Valid, 19223.37ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1328 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 18544.32ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 512 IncrementalHoareTripleChecker+Unchecked, 1293 mSDsCounter, 691 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3730 IncrementalHoareTripleChecker+Invalid, 4934 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 691 mSolverCounterUnsat, 0 mSDtfsCounter, 3730 mSolverCounterSat, 37.22ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 980 GetRequests, 768 SyntacticMatches, 17 SemanticMatches, 195 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 266379.56ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=175occurred in iteration=15, InterpolantAutomatonStates: 164, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 266.70ms AutomataMinimizationTime, 17 MinimizatonAttempts, 336 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 93 NumberOfFragments, 983 HoareAnnotationTreeSize, 9 FomulaSimplifications, 189601 FormulaSimplificationTreeSizeReduction, 1061.55ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 72106 FormulaSimplificationTreeSizeReductionInter, 84015.65ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 117.01ms SsaConstructionTime, 359.99ms SatisfiabilityAnalysisTime, 102708.59ms InterpolantComputationTime, 551 NumberOfCodeBlocks, 473 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 899 ConstructedInterpolants, 61 QuantifiedInterpolants, 37915 SizeOfPredicates, 84 NumberOfNonLiveVariables, 1770 ConjunctsInSsa, 267 ConjunctsInUnsatCore, 26 InterpolantComputations, 9 PerfectInterpolantSequences, 363/786 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((((((1 <= cond && B == 1) && q == p) && p == 2) && d == 2 * B) && A == r + q * B) || (((((1 <= cond && d == 2) && A == r) && q == 0) && p == 2) && d == 2 * B)) || (((((1 <= cond && q == 2) && p == q / 2) && B == 1) && (A + r * -1) / 2 == d) && A == r + q * B)) || (((((1 <= cond && B == 1) && A + d == r + p * B + q * B) && q == 3) && B == d) && A == r + q * B)) || ((((((1 <= cond && d == 4 * B) && d / 2 <= r) && B == 1) && A + d == r + p * B + q * B) && q == 0) && A == r + q * B)) || (((((1 <= cond && q == p) && A + d == r + p * B + q * B) && d == 1) && q == 1) && B == d)) || (((((((1 <= cond && B == 1) && 0 <= r) && A == r + 4 * B) && B == d) && r < 2 * B) && q / 2 / 2 == p) && A == r + q * B)) || (((((1 <= cond && B == 1) && p == 1) && A == r) && q == 0) && B == d)) || ((((B == 1 && 1 == cond) && A + d == r + p * B + q * B) && 1 <= p) && A == r + q * B) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((1 <= cond && (A == r + q * (d / 2) || !(p / 2 == 1))) && 1 <= p) && 1 <= B) && B == d) && A == r + q * B) || (((B == 1 && p == 1) && B == d) && !(0 == cond)) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: ((((((((((((1 <= cond && B == 1) && q == p) && p == 2) && d == 2 * B) && A == r + q * B) || (((((1 <= cond && d == 2) && A == r) && q == 0) && p == 2) && d == 2 * B)) || (((((1 <= cond && q == 2) && p == q / 2) && B == 1) && (A + r * -1) / 2 == d) && A == r + q * B)) || (((((1 <= cond && B == 1) && A + d == r + p * B + q * B) && q == 3) && B == d) && A == r + q * B)) || ((((((1 <= cond && d == 4 * B) && d / 2 <= r) && B == 1) && A + d == r + p * B + q * B) && q == 0) && A == r + q * B)) || (((((1 <= cond && q == p) && A + d == r + p * B + q * B) && d == 1) && q == 1) && B == d)) || (((((1 <= cond && B == 1) && p == 1) && A == r) && q == 0) && B == d)) || ((((((d == p * B && (A == r + d * q || !(p == 1))) && B == 1) && 1 == cond) && 1 <= p) && !(0 == cond)) && A == r + q * B)) || (((((((((1 <= cond && (A == r + d * q || !(p == 1))) && B == 1) && 0 <= r) && 1 <= p) && A == r + 4 * B) && !(0 == cond)) && r < 2 * B) && q / 2 / 2 == p) && A == r + q * B) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((d == 2 && 1 == cond) && q == 0) && p == 2) && d == 2 * B) && A == r + q * B) || (((((p == 1 && 1 == cond) && q == 0) && d == 1) && B == d) && A == r + q * B)) || (((((((d % 2 == 0 && d / 2 <= r) && B == 1) && 1 == cond) && A + d == r + p * B + q * B) && q == 0) && 1 <= d / 2 / 2) && A == r + q * B) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((1 <= cond && p == 1) && q == 0) && d == 1) && B == d) && A == r + q * B) || (((((1 <= cond && d == 2) && q == 0) && p == 2) && d == 2 * B) && A == r + q * B)) || (((((((d % 2 == 0 && 1 <= cond) && d / 2 <= r) && B == 1) && A + d == r + p * B + q * B) && q == 0) && 1 <= d / 2 / 2) && A == r + q * B) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((d == 2 && 1 == cond) && q == 0) && p == 2) && d == 2 * B) && A == r + q * B) || (((((((d % 2 == 0 && d / 2 <= r) && B == 1) && 1 == cond) && A + d == r + p * B + q * B) && q == 0) && 1 <= d / 2 / 2) && A == r + q * B)) || ((((p == 1 && q == 0) && d == 1) && B == d) && A == r + q * B) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((1 <= cond && p == 1) && q == 0) && d == 1) && B == d) && A == r + q * B) || (((((1 <= cond && d == 2) && q == 0) && p == 2) && d == 2 * B) && A == r + q * B)) || (((((((d % 2 == 0 && 1 <= cond) && d / 2 <= r) && B == 1) && A + d == r + p * B + q * B) && q == 0) && 1 <= d / 2 / 2) && A == r + q * B) RESULT: Ultimate proved your program to be correct! [2021-08-29 13:53:38,616 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-08-29 13:53:38,637 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 137 Received shutdown request...