./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem01_label29.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/eca-rers2012/Problem01_label29.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 4a846042d2e3a90f9afd312e363335049aaf47f7 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:44:58,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 03:44:58,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 03:44:58,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 03:44:58,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 03:44:58,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 03:44:58,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 03:44:58,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 03:44:58,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 03:44:58,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 03:44:58,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 03:44:58,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 03:44:58,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 03:44:58,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 03:44:58,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 03:44:58,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 03:44:58,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 03:44:58,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 03:44:58,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 03:44:58,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 03:44:58,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 03:44:58,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 03:44:58,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 03:44:58,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 03:44:58,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 03:44:58,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 03:44:58,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 03:44:58,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 03:44:58,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 03:44:58,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 03:44:58,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 03:44:58,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 03:44:58,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 03:44:58,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 03:44:58,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 03:44:58,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 03:44:58,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 03:44:58,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 03:44:58,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 03:44:58,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 03:44:58,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 03:44:58,641 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 03:44:58,680 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 03:44:58,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 03:44:58,682 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 03:44:58,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 03:44:58,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 03:44:58,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 03:44:58,684 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 03:44:58,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 03:44:58,685 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 03:44:58,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 03:44:58,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 03:44:58,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 03:44:58,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 03:44:58,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 03:44:58,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 03:44:58,687 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 03:44:58,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 03:44:58,687 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 03:44:58,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 03:44:58,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 03:44:58,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 03:44:58,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 03:44:58,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 03:44:58,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 03:44:58,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 03:44:58,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 03:44:58,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 03:44:58,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 03:44:58,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 03:44:58,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 03:44:58,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a846042d2e3a90f9afd312e363335049aaf47f7 [2021-08-29 03:44:58,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 03:44:58,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 03:44:58,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 03:44:59,000 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 03:44:59,001 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 03:44:59,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem01_label29.c [2021-08-29 03:44:59,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436ee6755/c4bc9e5242224e55a113ce1c02a4be8e/FLAGc7a9bd390 [2021-08-29 03:44:59,622 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 03:44:59,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label29.c [2021-08-29 03:44:59,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436ee6755/c4bc9e5242224e55a113ce1c02a4be8e/FLAGc7a9bd390 [2021-08-29 03:45:00,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436ee6755/c4bc9e5242224e55a113ce1c02a4be8e [2021-08-29 03:45:00,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 03:45:00,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 03:45:00,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 03:45:00,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 03:45:00,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 03:45:00,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:45:00" (1/1) ... [2021-08-29 03:45:00,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ea84998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:45:00, skipping insertion in model container [2021-08-29 03:45:00,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:45:00" (1/1) ... [2021-08-29 03:45:00,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 03:45:00,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 03:45:00,312 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/eca-rers2012/Problem01_label29.c[18109,18122] [2021-08-29 03:45:00,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 03:45:00,364 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 03:45:00,495 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/eca-rers2012/Problem01_label29.c[18109,18122] [2021-08-29 03:45:00,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 03:45:00,530 INFO L208 MainTranslator]: Completed translation [2021-08-29 03:45:00,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:45:00 WrapperNode [2021-08-29 03:45:00,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 03:45:00,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 03:45:00,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 03:45:00,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 03:45:00,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:45:00" (1/1) ... [2021-08-29 03:45:00,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:45:00" (1/1) ... [2021-08-29 03:45:00,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 03:45:00,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 03:45:00,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 03:45:00,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 03:45:00,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:45:00" (1/1) ... [2021-08-29 03:45:00,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:45:00" (1/1) ... [2021-08-29 03:45:00,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:45:00" (1/1) ... [2021-08-29 03:45:00,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:45:00" (1/1) ... [2021-08-29 03:45:00,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:45:00" (1/1) ... [2021-08-29 03:45:00,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:45:00" (1/1) ... [2021-08-29 03:45:00,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:45:00" (1/1) ... [2021-08-29 03:45:00,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 03:45:00,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 03:45:00,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 03:45:00,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 03:45:00,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:45:00" (1/1) ... [2021-08-29 03:45:00,692 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 03:45:00,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 03:45:00,711 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 03:45:00,724 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 03:45:00,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 03:45:00,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 03:45:00,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 03:45:00,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 03:45:01,245 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 03:45:01,245 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-29 03:45:01,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:45:01 BoogieIcfgContainer [2021-08-29 03:45:01,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 03:45:01,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 03:45:01,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 03:45:01,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 03:45:01,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 03:45:00" (1/3) ... [2021-08-29 03:45:01,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79230e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:45:01, skipping insertion in model container [2021-08-29 03:45:01,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:45:00" (2/3) ... [2021-08-29 03:45:01,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79230e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:45:01, skipping insertion in model container [2021-08-29 03:45:01,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:45:01" (3/3) ... [2021-08-29 03:45:01,252 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label29.c [2021-08-29 03:45:01,256 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 03:45:01,256 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 03:45:01,294 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 03:45:01,300 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 03:45:01,300 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 03:45:01,322 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 196 states have (on average 1.6683673469387754) internal successors, (327), 197 states have internal predecessors, (327), 0 states have call successors, (0), 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 03:45:01,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-08-29 03:45:01,331 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:45:01,332 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:45:01,332 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:45:01,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:45:01,338 INFO L82 PathProgramCache]: Analyzing trace with hash 620620582, now seen corresponding path program 1 times [2021-08-29 03:45:01,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:45:01,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549962645] [2021-08-29 03:45:01,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:45:01,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:45:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:45:01,859 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 03:45:01,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:45:01,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549962645] [2021-08-29 03:45:01,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549962645] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:45:01,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:45:01,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:45:01,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170010704] [2021-08-29 03:45:01,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:45:01,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:45:01,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:45:01,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:45:01,903 INFO L87 Difference]: Start difference. First operand has 198 states, 196 states have (on average 1.6683673469387754) internal successors, (327), 197 states have internal predecessors, (327), 0 states have call successors, (0), 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 4 states, 4 states have (on average 25.25) internal successors, (101), 3 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 03:45:03,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:45:03,083 INFO L93 Difference]: Finished difference Result 662 states and 1178 transitions. [2021-08-29 03:45:03,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 03:45:03,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 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 101 [2021-08-29 03:45:03,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:45:03,098 INFO L225 Difference]: With dead ends: 662 [2021-08-29 03:45:03,098 INFO L226 Difference]: Without dead ends: 397 [2021-08-29 03:45:03,102 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.84ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:45:03,105 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 350 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 820.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.38ms SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1043.25ms IncrementalHoareTripleChecker+Time [2021-08-29 03:45:03,106 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 0 Invalid, 969 Unknown, 0 Unchecked, 11.38ms Time], IncrementalHoareTripleChecker [240 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 1043.25ms Time] [2021-08-29 03:45:03,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-08-29 03:45:03,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2021-08-29 03:45:03,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.3055555555555556) internal successors, (517), 396 states have internal predecessors, (517), 0 states have call successors, (0), 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 03:45:03,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 517 transitions. [2021-08-29 03:45:03,191 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 517 transitions. Word has length 101 [2021-08-29 03:45:03,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:45:03,192 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 517 transitions. [2021-08-29 03:45:03,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 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 03:45:03,192 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 517 transitions. [2021-08-29 03:45:03,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-08-29 03:45:03,203 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:45:03,204 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:45:03,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 03:45:03,205 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:45:03,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:45:03,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1432944013, now seen corresponding path program 1 times [2021-08-29 03:45:03,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:45:03,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376500276] [2021-08-29 03:45:03,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:45:03,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:45:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:45:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:45:03,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:45:03,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376500276] [2021-08-29 03:45:03,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376500276] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:45:03,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:45:03,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:45:03,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303624041] [2021-08-29 03:45:03,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:45:03,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:45:03,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:45:03,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:45:03,464 INFO L87 Difference]: Start difference. First operand 397 states and 517 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 03:45:04,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:45:04,063 INFO L93 Difference]: Finished difference Result 887 states and 1235 transitions. [2021-08-29 03:45:04,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:45:04,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-08-29 03:45:04,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:45:04,066 INFO L225 Difference]: With dead ends: 887 [2021-08-29 03:45:04,066 INFO L226 Difference]: Without dead ends: 528 [2021-08-29 03:45:04,067 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.98ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:45:04,068 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 130 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 460.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.72ms SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 567.61ms IncrementalHoareTripleChecker+Time [2021-08-29 03:45:04,069 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 0 Invalid, 760 Unknown, 0 Unchecked, 2.72ms Time], IncrementalHoareTripleChecker [153 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 567.61ms Time] [2021-08-29 03:45:04,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-08-29 03:45:04,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 397. [2021-08-29 03:45:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.196969696969697) internal successors, (474), 396 states have internal predecessors, (474), 0 states have call successors, (0), 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 03:45:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 474 transitions. [2021-08-29 03:45:04,097 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 474 transitions. Word has length 108 [2021-08-29 03:45:04,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:45:04,099 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 474 transitions. [2021-08-29 03:45:04,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 03:45:04,099 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 474 transitions. [2021-08-29 03:45:04,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-08-29 03:45:04,101 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:45:04,102 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:45:04,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 03:45:04,102 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:45:04,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:45:04,104 INFO L82 PathProgramCache]: Analyzing trace with hash 481675509, now seen corresponding path program 1 times [2021-08-29 03:45:04,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:45:04,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487993146] [2021-08-29 03:45:04,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:45:04,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:45:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:45:04,206 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:45:04,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:45:04,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487993146] [2021-08-29 03:45:04,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487993146] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 03:45:04,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430824222] [2021-08-29 03:45:04,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:45:04,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 03:45:04,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 03:45:04,217 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 03:45:04,244 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 03:45:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:45:04,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-29 03:45:04,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 03:45:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-29 03:45:04,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 03:45:04,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430824222] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:45:04,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-29 03:45:04,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-08-29 03:45:04,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884757970] [2021-08-29 03:45:04,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:45:04,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:45:04,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:45:04,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:45:04,738 INFO L87 Difference]: Start difference. First operand 397 states and 474 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 03:45:05,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:45:05,061 INFO L93 Difference]: Finished difference Result 1185 states and 1417 transitions. [2021-08-29 03:45:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:45:05,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 116 [2021-08-29 03:45:05,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:45:05,065 INFO L225 Difference]: With dead ends: 1185 [2021-08-29 03:45:05,065 INFO L226 Difference]: Without dead ends: 790 [2021-08-29 03:45:05,066 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.07ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:45:05,067 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 239.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.75ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 301.25ms IncrementalHoareTripleChecker+Time [2021-08-29 03:45:05,067 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 378 Unknown, 0 Unchecked, 1.75ms Time], IncrementalHoareTripleChecker [47 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 301.25ms Time] [2021-08-29 03:45:05,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-08-29 03:45:05,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 659. [2021-08-29 03:45:05,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 1.21580547112462) internal successors, (800), 658 states have internal predecessors, (800), 0 states have call successors, (0), 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 03:45:05,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 800 transitions. [2021-08-29 03:45:05,085 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 800 transitions. Word has length 116 [2021-08-29 03:45:05,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:45:05,087 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 800 transitions. [2021-08-29 03:45:05,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 03:45:05,088 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 800 transitions. [2021-08-29 03:45:05,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-08-29 03:45:05,090 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:45:05,091 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:45:05,121 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 03:45:05,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 03:45:05,301 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:45:05,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:45:05,302 INFO L82 PathProgramCache]: Analyzing trace with hash 923419414, now seen corresponding path program 1 times [2021-08-29 03:45:05,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:45:05,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953889252] [2021-08-29 03:45:05,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:45:05,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:45:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:45:05,370 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-29 03:45:05,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:45:05,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953889252] [2021-08-29 03:45:05,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953889252] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 03:45:05,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086205887] [2021-08-29 03:45:05,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:45:05,371 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 03:45:05,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 03:45:05,373 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 03:45:05,383 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 03:45:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:45:05,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-29 03:45:05,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 03:45:05,743 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-29 03:45:05,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 03:45:05,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086205887] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:45:05,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-29 03:45:05,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-08-29 03:45:05,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443458335] [2021-08-29 03:45:05,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:45:05,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:45:05,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:45:05,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:45:05,746 INFO L87 Difference]: Start difference. First operand 659 states and 800 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:45:06,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:45:06,112 INFO L93 Difference]: Finished difference Result 1578 states and 1948 transitions. [2021-08-29 03:45:06,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:45:06,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-08-29 03:45:06,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:45:06,117 INFO L225 Difference]: With dead ends: 1578 [2021-08-29 03:45:06,117 INFO L226 Difference]: Without dead ends: 921 [2021-08-29 03:45:06,118 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.17ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:45:06,119 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 276.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.48ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 344.01ms IncrementalHoareTripleChecker+Time [2021-08-29 03:45:06,119 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 525 Unknown, 0 Unchecked, 1.48ms Time], IncrementalHoareTripleChecker [22 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 344.01ms Time] [2021-08-29 03:45:06,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2021-08-29 03:45:06,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 790. [2021-08-29 03:45:06,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 1.2103929024081115) internal successors, (955), 789 states have internal predecessors, (955), 0 states have call successors, (0), 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 03:45:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 955 transitions. [2021-08-29 03:45:06,141 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 955 transitions. Word has length 130 [2021-08-29 03:45:06,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:45:06,142 INFO L470 AbstractCegarLoop]: Abstraction has 790 states and 955 transitions. [2021-08-29 03:45:06,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:45:06,144 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 955 transitions. [2021-08-29 03:45:06,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-08-29 03:45:06,146 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:45:06,146 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:45:06,174 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 03:45:06,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-08-29 03:45:06,371 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:45:06,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:45:06,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1391833337, now seen corresponding path program 1 times [2021-08-29 03:45:06,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:45:06,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649102086] [2021-08-29 03:45:06,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:45:06,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:45:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:45:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-08-29 03:45:06,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:45:06,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649102086] [2021-08-29 03:45:06,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649102086] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 03:45:06,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723689116] [2021-08-29 03:45:06,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:45:06,435 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 03:45:06,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 03:45:06,437 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 03:45:06,438 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 03:45:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:45:06,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-29 03:45:06,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 03:45:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-29 03:45:06,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 03:45:06,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723689116] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:45:06,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-29 03:45:06,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-08-29 03:45:06,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767170135] [2021-08-29 03:45:06,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:45:06,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:45:06,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:45:06,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:45:06,768 INFO L87 Difference]: Start difference. First operand 790 states and 955 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 03:45:07,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:45:07,153 INFO L93 Difference]: Finished difference Result 2102 states and 2554 transitions. [2021-08-29 03:45:07,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:45:07,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 137 [2021-08-29 03:45:07,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:45:07,160 INFO L225 Difference]: With dead ends: 2102 [2021-08-29 03:45:07,160 INFO L226 Difference]: Without dead ends: 1314 [2021-08-29 03:45:07,161 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.81ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:45:07,162 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 283.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.46ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 357.62ms IncrementalHoareTripleChecker+Time [2021-08-29 03:45:07,162 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 545 Unknown, 0 Unchecked, 1.46ms Time], IncrementalHoareTripleChecker [34 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 357.62ms Time] [2021-08-29 03:45:07,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2021-08-29 03:45:07,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1314. [2021-08-29 03:45:07,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1313 states have (on average 1.1805026656511806) internal successors, (1550), 1313 states have internal predecessors, (1550), 0 states have call successors, (0), 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 03:45:07,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1550 transitions. [2021-08-29 03:45:07,217 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1550 transitions. Word has length 137 [2021-08-29 03:45:07,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:45:07,217 INFO L470 AbstractCegarLoop]: Abstraction has 1314 states and 1550 transitions. [2021-08-29 03:45:07,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 03:45:07,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1550 transitions. [2021-08-29 03:45:07,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-08-29 03:45:07,223 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:45:07,223 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:45:07,250 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 03:45:07,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 03:45:07,437 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:45:07,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:45:07,437 INFO L82 PathProgramCache]: Analyzing trace with hash 952153212, now seen corresponding path program 1 times [2021-08-29 03:45:07,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:45:07,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296003695] [2021-08-29 03:45:07,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:45:07,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:45:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:45:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-08-29 03:45:07,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:45:07,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296003695] [2021-08-29 03:45:07,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296003695] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 03:45:07,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219415555] [2021-08-29 03:45:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:45:07,491 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 03:45:07,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 03:45:07,505 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 03:45:07,506 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 03:45:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:45:07,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-29 03:45:07,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 03:45:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-29 03:45:07,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 03:45:07,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219415555] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:45:07,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-29 03:45:07,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-08-29 03:45:07,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189245155] [2021-08-29 03:45:07,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:45:07,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:45:07,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:45:07,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:45:07,825 INFO L87 Difference]: Start difference. First operand 1314 states and 1550 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 03:45:08,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:45:08,184 INFO L93 Difference]: Finished difference Result 3412 states and 4009 transitions. [2021-08-29 03:45:08,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:45:08,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 146 [2021-08-29 03:45:08,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:45:08,192 INFO L225 Difference]: With dead ends: 3412 [2021-08-29 03:45:08,192 INFO L226 Difference]: Without dead ends: 2100 [2021-08-29 03:45:08,193 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.53ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:45:08,196 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 136 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 264.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.48ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 325.82ms IncrementalHoareTripleChecker+Time [2021-08-29 03:45:08,198 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 0 Invalid, 375 Unknown, 0 Unchecked, 1.48ms Time], IncrementalHoareTripleChecker [40 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 325.82ms Time] [2021-08-29 03:45:08,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2021-08-29 03:45:08,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1314. [2021-08-29 03:45:08,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1313 states have (on average 1.1805026656511806) internal successors, (1550), 1313 states have internal predecessors, (1550), 0 states have call successors, (0), 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 03:45:08,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1550 transitions. [2021-08-29 03:45:08,234 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1550 transitions. Word has length 146 [2021-08-29 03:45:08,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:45:08,234 INFO L470 AbstractCegarLoop]: Abstraction has 1314 states and 1550 transitions. [2021-08-29 03:45:08,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 03:45:08,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1550 transitions. [2021-08-29 03:45:08,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-08-29 03:45:08,238 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:45:08,238 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:45:08,267 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 03:45:08,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 03:45:08,459 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:45:08,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:45:08,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1011202792, now seen corresponding path program 1 times [2021-08-29 03:45:08,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:45:08,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44251439] [2021-08-29 03:45:08,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:45:08,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:45:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:45:08,530 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-29 03:45:08,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:45:08,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44251439] [2021-08-29 03:45:08,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44251439] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:45:08,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:45:08,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 03:45:08,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193678511] [2021-08-29 03:45:08,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:45:08,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:45:08,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:45:08,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:45:08,533 INFO L87 Difference]: Start difference. First operand 1314 states and 1550 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 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 03:45:08,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:45:08,873 INFO L93 Difference]: Finished difference Result 2888 states and 3411 transitions. [2021-08-29 03:45:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:45:08,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 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 149 [2021-08-29 03:45:08,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:45:08,879 INFO L225 Difference]: With dead ends: 2888 [2021-08-29 03:45:08,879 INFO L226 Difference]: Without dead ends: 1576 [2021-08-29 03:45:08,881 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:45:08,881 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 106 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 253.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.06ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 311.78ms IncrementalHoareTripleChecker+Time [2021-08-29 03:45:08,882 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 0 Invalid, 375 Unknown, 0 Unchecked, 1.06ms Time], IncrementalHoareTripleChecker [33 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 311.78ms Time] [2021-08-29 03:45:08,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2021-08-29 03:45:08,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1445. [2021-08-29 03:45:08,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 1.172437673130194) internal successors, (1693), 1444 states have internal predecessors, (1693), 0 states have call successors, (0), 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 03:45:08,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1693 transitions. [2021-08-29 03:45:08,921 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1693 transitions. Word has length 149 [2021-08-29 03:45:08,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:45:08,921 INFO L470 AbstractCegarLoop]: Abstraction has 1445 states and 1693 transitions. [2021-08-29 03:45:08,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 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 03:45:08,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1693 transitions. [2021-08-29 03:45:08,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-08-29 03:45:08,925 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:45:08,925 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:45:08,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 03:45:08,926 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:45:08,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:45:08,926 INFO L82 PathProgramCache]: Analyzing trace with hash -79617286, now seen corresponding path program 1 times [2021-08-29 03:45:08,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:45:08,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818140795] [2021-08-29 03:45:08,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:45:08,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:45:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:45:08,970 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-08-29 03:45:08,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:45:08,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818140795] [2021-08-29 03:45:08,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818140795] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:45:08,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:45:08,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:45:08,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942438812] [2021-08-29 03:45:08,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:45:08,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:45:08,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:45:08,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:45:08,974 INFO L87 Difference]: Start difference. First operand 1445 states and 1693 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:45:09,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:45:09,304 INFO L93 Difference]: Finished difference Result 3674 states and 4268 transitions. [2021-08-29 03:45:09,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:45:09,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2021-08-29 03:45:09,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:45:09,312 INFO L225 Difference]: With dead ends: 3674 [2021-08-29 03:45:09,312 INFO L226 Difference]: Without dead ends: 2231 [2021-08-29 03:45:09,314 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:45:09,315 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 132 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 238.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 297.87ms IncrementalHoareTripleChecker+Time [2021-08-29 03:45:09,315 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 0 Invalid, 377 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [41 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 297.87ms Time] [2021-08-29 03:45:09,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2021-08-29 03:45:09,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 1707. [2021-08-29 03:45:09,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1706 states have (on average 1.164126611957796) internal successors, (1986), 1706 states have internal predecessors, (1986), 0 states have call successors, (0), 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 03:45:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 1986 transitions. [2021-08-29 03:45:09,357 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 1986 transitions. Word has length 158 [2021-08-29 03:45:09,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:45:09,357 INFO L470 AbstractCegarLoop]: Abstraction has 1707 states and 1986 transitions. [2021-08-29 03:45:09,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:45:09,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 1986 transitions. [2021-08-29 03:45:09,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-08-29 03:45:09,361 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:45:09,361 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:45:09,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-29 03:45:09,362 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:45:09,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:45:09,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1289032937, now seen corresponding path program 1 times [2021-08-29 03:45:09,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:45:09,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125410378] [2021-08-29 03:45:09,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:45:09,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:45:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:45:09,436 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-08-29 03:45:09,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:45:09,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125410378] [2021-08-29 03:45:09,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125410378] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:45:09,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:45:09,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:45:09,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031114068] [2021-08-29 03:45:09,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:45:09,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:45:09,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:45:09,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:45:09,439 INFO L87 Difference]: Start difference. First operand 1707 states and 1986 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:45:09,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:45:09,985 INFO L93 Difference]: Finished difference Result 3412 states and 3936 transitions. [2021-08-29 03:45:09,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:45:09,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 164 [2021-08-29 03:45:09,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:45:09,991 INFO L225 Difference]: With dead ends: 3412 [2021-08-29 03:45:09,992 INFO L226 Difference]: Without dead ends: 1707 [2021-08-29 03:45:09,995 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.24ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:45:09,997 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 266 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 406.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.32ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 508.75ms IncrementalHoareTripleChecker+Time [2021-08-29 03:45:09,997 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 0 Invalid, 726 Unknown, 0 Unchecked, 2.32ms Time], IncrementalHoareTripleChecker [51 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 508.75ms Time] [2021-08-29 03:45:10,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-08-29 03:45:10,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1576. [2021-08-29 03:45:10,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 1.1352380952380952) internal successors, (1788), 1575 states have internal predecessors, (1788), 0 states have call successors, (0), 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 03:45:10,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 1788 transitions. [2021-08-29 03:45:10,027 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 1788 transitions. Word has length 164 [2021-08-29 03:45:10,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:45:10,028 INFO L470 AbstractCegarLoop]: Abstraction has 1576 states and 1788 transitions. [2021-08-29 03:45:10,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:45:10,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 1788 transitions. [2021-08-29 03:45:10,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-08-29 03:45:10,031 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:45:10,032 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:45:10,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-29 03:45:10,032 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:45:10,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:45:10,033 INFO L82 PathProgramCache]: Analyzing trace with hash 659000264, now seen corresponding path program 1 times [2021-08-29 03:45:10,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:45:10,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351667699] [2021-08-29 03:45:10,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:45:10,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:45:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:45:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 93 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-29 03:45:10,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:45:10,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351667699] [2021-08-29 03:45:10,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351667699] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 03:45:10,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11601701] [2021-08-29 03:45:10,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:45:10,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 03:45:10,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 03:45:10,114 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 03:45:10,143 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 03:45:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:45:10,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-29 03:45:10,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 03:45:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-08-29 03:45:10,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 03:45:10,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11601701] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:45:10,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-29 03:45:10,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-08-29 03:45:10,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562601564] [2021-08-29 03:45:10,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:45:10,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:45:10,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:45:10,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:45:10,514 INFO L87 Difference]: Start difference. First operand 1576 states and 1788 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 03:45:10,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:45:10,856 INFO L93 Difference]: Finished difference Result 3541 states and 4004 transitions. [2021-08-29 03:45:10,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:45:10,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 182 [2021-08-29 03:45:10,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:45:10,862 INFO L225 Difference]: With dead ends: 3541 [2021-08-29 03:45:10,862 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 03:45:10,868 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.12ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:45:10,868 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 255.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.08ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 318.00ms IncrementalHoareTripleChecker+Time [2021-08-29 03:45:10,869 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 508 Unknown, 0 Unchecked, 1.08ms Time], IncrementalHoareTripleChecker [31 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 318.00ms Time] [2021-08-29 03:45:10,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 03:45:10,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 03:45:10,870 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 03:45:10,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 03:45:10,870 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 182 [2021-08-29 03:45:10,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:45:10,871 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 03:45:10,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 03:45:10,872 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 03:45:10,872 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 03:45:10,874 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 03:45:10,903 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 03:45:11,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-29 03:45:11,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 03:45:11,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:45:11,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:45:11,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:45:11,267 INFO L858 garLoopResultBuilder]: For program point L564(line 564) no Hoare annotation was computed. [2021-08-29 03:45:11,267 INFO L858 garLoopResultBuilder]: For program point L531(line 531) no Hoare annotation was computed. [2021-08-29 03:45:11,267 INFO L858 garLoopResultBuilder]: For program point L498(line 498) no Hoare annotation was computed. [2021-08-29 03:45:11,267 INFO L858 garLoopResultBuilder]: For program point L465(line 465) no Hoare annotation was computed. [2021-08-29 03:45:11,267 INFO L858 garLoopResultBuilder]: For program point L432(line 432) no Hoare annotation was computed. [2021-08-29 03:45:11,267 INFO L858 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-08-29 03:45:11,267 INFO L858 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-08-29 03:45:11,267 INFO L858 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-08-29 03:45:11,267 INFO L858 garLoopResultBuilder]: For program point L566-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,267 INFO L858 garLoopResultBuilder]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,267 INFO L858 garLoopResultBuilder]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,267 INFO L858 garLoopResultBuilder]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,267 INFO L858 garLoopResultBuilder]: For program point L401(lines 401 403) no Hoare annotation was computed. [2021-08-29 03:45:11,267 INFO L858 garLoopResultBuilder]: For program point L434-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,268 INFO L858 garLoopResultBuilder]: For program point L401-2(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,268 INFO L858 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-08-29 03:45:11,268 INFO L858 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-08-29 03:45:11,268 INFO L858 garLoopResultBuilder]: For program point L567(line 567) no Hoare annotation was computed. [2021-08-29 03:45:11,268 INFO L858 garLoopResultBuilder]: For program point L534(line 534) no Hoare annotation was computed. [2021-08-29 03:45:11,268 INFO L858 garLoopResultBuilder]: For program point L501(line 501) no Hoare annotation was computed. [2021-08-29 03:45:11,268 INFO L858 garLoopResultBuilder]: For program point L468(line 468) no Hoare annotation was computed. [2021-08-29 03:45:11,268 INFO L858 garLoopResultBuilder]: For program point L435(line 435) no Hoare annotation was computed. [2021-08-29 03:45:11,268 INFO L858 garLoopResultBuilder]: For program point L402(line 402) no Hoare annotation was computed. [2021-08-29 03:45:11,268 INFO L858 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-08-29 03:45:11,268 INFO L858 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-08-29 03:45:11,268 INFO L858 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-08-29 03:45:11,268 INFO L858 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-08-29 03:45:11,268 INFO L858 garLoopResultBuilder]: For program point L569-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,269 INFO L858 garLoopResultBuilder]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,269 INFO L858 garLoopResultBuilder]: For program point L503-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,269 INFO L858 garLoopResultBuilder]: For program point L470-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,269 INFO L858 garLoopResultBuilder]: For program point L437-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,269 INFO L858 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-08-29 03:45:11,269 INFO L858 garLoopResultBuilder]: For program point L404-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,269 INFO L858 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-08-29 03:45:11,269 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-08-29 03:45:11,269 INFO L858 garLoopResultBuilder]: For program point L570(line 570) no Hoare annotation was computed. [2021-08-29 03:45:11,269 INFO L858 garLoopResultBuilder]: For program point L537(line 537) no Hoare annotation was computed. [2021-08-29 03:45:11,269 INFO L858 garLoopResultBuilder]: For program point L504(line 504) no Hoare annotation was computed. [2021-08-29 03:45:11,269 INFO L858 garLoopResultBuilder]: For program point L471(line 471) no Hoare annotation was computed. [2021-08-29 03:45:11,269 INFO L858 garLoopResultBuilder]: For program point L438(line 438) no Hoare annotation was computed. [2021-08-29 03:45:11,269 INFO L858 garLoopResultBuilder]: For program point L405(line 405) no Hoare annotation was computed. [2021-08-29 03:45:11,269 INFO L858 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-08-29 03:45:11,270 INFO L858 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-08-29 03:45:11,270 INFO L858 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-08-29 03:45:11,270 INFO L858 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-08-29 03:45:11,270 INFO L858 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-08-29 03:45:11,270 INFO L858 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-08-29 03:45:11,270 INFO L858 garLoopResultBuilder]: For program point L572-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,270 INFO L858 garLoopResultBuilder]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,270 INFO L858 garLoopResultBuilder]: For program point L506-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,270 INFO L858 garLoopResultBuilder]: For program point L473-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,270 INFO L858 garLoopResultBuilder]: For program point L440-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,270 INFO L858 garLoopResultBuilder]: For program point L407-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,270 INFO L858 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-08-29 03:45:11,270 INFO L858 garLoopResultBuilder]: For program point L573(line 573) no Hoare annotation was computed. [2021-08-29 03:45:11,270 INFO L858 garLoopResultBuilder]: For program point L540(line 540) no Hoare annotation was computed. [2021-08-29 03:45:11,271 INFO L858 garLoopResultBuilder]: For program point L507(line 507) no Hoare annotation was computed. [2021-08-29 03:45:11,271 INFO L858 garLoopResultBuilder]: For program point L474(line 474) no Hoare annotation was computed. [2021-08-29 03:45:11,271 INFO L858 garLoopResultBuilder]: For program point L441(line 441) no Hoare annotation was computed. [2021-08-29 03:45:11,271 INFO L858 garLoopResultBuilder]: For program point L408(line 408) no Hoare annotation was computed. [2021-08-29 03:45:11,271 INFO L858 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-08-29 03:45:11,271 INFO L858 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-08-29 03:45:11,271 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-08-29 03:45:11,271 INFO L858 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-08-29 03:45:11,271 INFO L858 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-08-29 03:45:11,271 INFO L858 garLoopResultBuilder]: For program point L575-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,271 INFO L858 garLoopResultBuilder]: For program point L542-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,271 INFO L858 garLoopResultBuilder]: For program point L509-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,271 INFO L858 garLoopResultBuilder]: For program point L476-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,271 INFO L858 garLoopResultBuilder]: For program point L443-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,272 INFO L858 garLoopResultBuilder]: For program point L410-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,272 INFO L858 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-08-29 03:45:11,272 INFO L858 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-08-29 03:45:11,272 INFO L858 garLoopResultBuilder]: For program point L576(line 576) no Hoare annotation was computed. [2021-08-29 03:45:11,272 INFO L858 garLoopResultBuilder]: For program point L543(line 543) no Hoare annotation was computed. [2021-08-29 03:45:11,272 INFO L858 garLoopResultBuilder]: For program point L510(line 510) no Hoare annotation was computed. [2021-08-29 03:45:11,272 INFO L858 garLoopResultBuilder]: For program point L477(line 477) no Hoare annotation was computed. [2021-08-29 03:45:11,272 INFO L858 garLoopResultBuilder]: For program point L444(line 444) no Hoare annotation was computed. [2021-08-29 03:45:11,272 INFO L858 garLoopResultBuilder]: For program point L411(line 411) no Hoare annotation was computed. [2021-08-29 03:45:11,272 INFO L858 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-08-29 03:45:11,272 INFO L858 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-08-29 03:45:11,272 INFO L858 garLoopResultBuilder]: For program point L578-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,272 INFO L858 garLoopResultBuilder]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,272 INFO L858 garLoopResultBuilder]: For program point L512-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,273 INFO L858 garLoopResultBuilder]: For program point L479-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,273 INFO L858 garLoopResultBuilder]: For program point L446-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,273 INFO L858 garLoopResultBuilder]: For program point L413-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,273 INFO L858 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-08-29 03:45:11,273 INFO L858 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-08-29 03:45:11,273 INFO L858 garLoopResultBuilder]: For program point L579(line 579) no Hoare annotation was computed. [2021-08-29 03:45:11,273 INFO L858 garLoopResultBuilder]: For program point L546(line 546) no Hoare annotation was computed. [2021-08-29 03:45:11,274 INFO L858 garLoopResultBuilder]: For program point L513(line 513) no Hoare annotation was computed. [2021-08-29 03:45:11,274 INFO L858 garLoopResultBuilder]: For program point L480(line 480) no Hoare annotation was computed. [2021-08-29 03:45:11,274 INFO L858 garLoopResultBuilder]: For program point L447(line 447) no Hoare annotation was computed. [2021-08-29 03:45:11,274 INFO L858 garLoopResultBuilder]: For program point L414(line 414) no Hoare annotation was computed. [2021-08-29 03:45:11,274 INFO L858 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-08-29 03:45:11,274 INFO L858 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-08-29 03:45:11,274 INFO L858 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-08-29 03:45:11,274 INFO L858 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-08-29 03:45:11,275 INFO L858 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-08-29 03:45:11,275 INFO L858 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-08-29 03:45:11,275 INFO L858 garLoopResultBuilder]: For program point L581-1(lines 581 583) no Hoare annotation was computed. [2021-08-29 03:45:11,275 INFO L858 garLoopResultBuilder]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,275 INFO L858 garLoopResultBuilder]: For program point L515-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,275 INFO L858 garLoopResultBuilder]: For program point L482-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,275 INFO L858 garLoopResultBuilder]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,275 INFO L858 garLoopResultBuilder]: For program point L416-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,276 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 03:45:11,276 INFO L858 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-08-29 03:45:11,276 INFO L858 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-08-29 03:45:11,276 INFO L858 garLoopResultBuilder]: For program point L582(line 582) no Hoare annotation was computed. [2021-08-29 03:45:11,276 INFO L858 garLoopResultBuilder]: For program point L549(line 549) no Hoare annotation was computed. [2021-08-29 03:45:11,276 INFO L858 garLoopResultBuilder]: For program point L516(line 516) no Hoare annotation was computed. [2021-08-29 03:45:11,276 INFO L858 garLoopResultBuilder]: For program point L483(line 483) no Hoare annotation was computed. [2021-08-29 03:45:11,276 INFO L858 garLoopResultBuilder]: For program point L450(line 450) no Hoare annotation was computed. [2021-08-29 03:45:11,277 INFO L858 garLoopResultBuilder]: For program point L417(line 417) no Hoare annotation was computed. [2021-08-29 03:45:11,277 INFO L858 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-08-29 03:45:11,277 INFO L854 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a17~0 1))) (or (and (<= ~a8~0 14) .cse0 (<= ~a16~0 5)) (<= ~a17~0 0) (and (not (= ~a7~0 1)) (= ~a21~0 1) .cse0))) [2021-08-29 03:45:11,277 INFO L858 garLoopResultBuilder]: For program point L551-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,277 INFO L858 garLoopResultBuilder]: For program point L518-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,278 INFO L858 garLoopResultBuilder]: For program point L485-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,278 INFO L858 garLoopResultBuilder]: For program point L452-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,278 INFO L858 garLoopResultBuilder]: For program point L419-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,278 INFO L858 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-08-29 03:45:11,278 INFO L858 garLoopResultBuilder]: For program point L552(line 552) no Hoare annotation was computed. [2021-08-29 03:45:11,278 INFO L858 garLoopResultBuilder]: For program point L519(line 519) no Hoare annotation was computed. [2021-08-29 03:45:11,278 INFO L858 garLoopResultBuilder]: For program point L486(line 486) no Hoare annotation was computed. [2021-08-29 03:45:11,278 INFO L858 garLoopResultBuilder]: For program point L453(line 453) no Hoare annotation was computed. [2021-08-29 03:45:11,279 INFO L858 garLoopResultBuilder]: For program point L420(line 420) no Hoare annotation was computed. [2021-08-29 03:45:11,279 INFO L858 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-08-29 03:45:11,279 INFO L858 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-08-29 03:45:11,279 INFO L858 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-08-29 03:45:11,279 INFO L858 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-08-29 03:45:11,279 INFO L858 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-08-29 03:45:11,279 INFO L858 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-08-29 03:45:11,279 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 03:45:11,280 INFO L858 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-08-29 03:45:11,280 INFO L861 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-08-29 03:45:11,280 INFO L858 garLoopResultBuilder]: For program point L554-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,280 INFO L858 garLoopResultBuilder]: For program point L521-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,280 INFO L858 garLoopResultBuilder]: For program point L488-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,280 INFO L858 garLoopResultBuilder]: For program point L455-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,280 INFO L858 garLoopResultBuilder]: For program point L422-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,280 INFO L858 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-08-29 03:45:11,281 INFO L858 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-08-29 03:45:11,281 INFO L858 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-08-29 03:45:11,281 INFO L858 garLoopResultBuilder]: For program point L555(line 555) no Hoare annotation was computed. [2021-08-29 03:45:11,281 INFO L858 garLoopResultBuilder]: For program point L522(line 522) no Hoare annotation was computed. [2021-08-29 03:45:11,281 INFO L858 garLoopResultBuilder]: For program point L489(line 489) no Hoare annotation was computed. [2021-08-29 03:45:11,281 INFO L858 garLoopResultBuilder]: For program point L456(line 456) no Hoare annotation was computed. [2021-08-29 03:45:11,281 INFO L858 garLoopResultBuilder]: For program point L423(line 423) no Hoare annotation was computed. [2021-08-29 03:45:11,281 INFO L858 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-08-29 03:45:11,282 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 03:45:11,282 INFO L858 garLoopResultBuilder]: For program point L557-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,282 INFO L858 garLoopResultBuilder]: For program point L524-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,282 INFO L858 garLoopResultBuilder]: For program point L491-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,282 INFO L858 garLoopResultBuilder]: For program point L458-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,282 INFO L858 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-08-29 03:45:11,282 INFO L858 garLoopResultBuilder]: For program point L425-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,283 INFO L858 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-08-29 03:45:11,283 INFO L858 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-08-29 03:45:11,283 INFO L858 garLoopResultBuilder]: For program point L558(line 558) no Hoare annotation was computed. [2021-08-29 03:45:11,283 INFO L858 garLoopResultBuilder]: For program point L525(line 525) no Hoare annotation was computed. [2021-08-29 03:45:11,283 INFO L858 garLoopResultBuilder]: For program point L492(line 492) no Hoare annotation was computed. [2021-08-29 03:45:11,283 INFO L858 garLoopResultBuilder]: For program point L459(line 459) no Hoare annotation was computed. [2021-08-29 03:45:11,283 INFO L858 garLoopResultBuilder]: For program point L426(line 426) no Hoare annotation was computed. [2021-08-29 03:45:11,283 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-08-29 03:45:11,284 INFO L858 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-08-29 03:45:11,284 INFO L858 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-08-29 03:45:11,284 INFO L858 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-08-29 03:45:11,284 INFO L858 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-08-29 03:45:11,284 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-08-29 03:45:11,284 INFO L858 garLoopResultBuilder]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,284 INFO L854 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a17~0 1))) (or (and (<= ~a8~0 14) .cse0 (<= ~a16~0 5)) (<= ~a17~0 0) (and (not (= ~a7~0 1)) (= ~a21~0 1) .cse0))) [2021-08-29 03:45:11,285 INFO L858 garLoopResultBuilder]: For program point L527-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,285 INFO L858 garLoopResultBuilder]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,285 INFO L858 garLoopResultBuilder]: For program point L461-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,285 INFO L858 garLoopResultBuilder]: For program point L428-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,285 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-08-29 03:45:11,285 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 03:45:11,285 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 489) no Hoare annotation was computed. [2021-08-29 03:45:11,286 INFO L858 garLoopResultBuilder]: For program point L561(line 561) no Hoare annotation was computed. [2021-08-29 03:45:11,286 INFO L858 garLoopResultBuilder]: For program point L528(line 528) no Hoare annotation was computed. [2021-08-29 03:45:11,286 INFO L858 garLoopResultBuilder]: For program point L495(line 495) no Hoare annotation was computed. [2021-08-29 03:45:11,286 INFO L858 garLoopResultBuilder]: For program point L462(line 462) no Hoare annotation was computed. [2021-08-29 03:45:11,286 INFO L858 garLoopResultBuilder]: For program point L429(line 429) no Hoare annotation was computed. [2021-08-29 03:45:11,286 INFO L858 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-08-29 03:45:11,286 INFO L858 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-08-29 03:45:11,286 INFO L858 garLoopResultBuilder]: For program point L563-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,287 INFO L858 garLoopResultBuilder]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,287 INFO L858 garLoopResultBuilder]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,287 INFO L858 garLoopResultBuilder]: For program point L464-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,287 INFO L858 garLoopResultBuilder]: For program point L431-1(lines 40 585) no Hoare annotation was computed. [2021-08-29 03:45:11,287 INFO L858 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-08-29 03:45:11,287 INFO L858 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-08-29 03:45:11,287 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-08-29 03:45:11,287 INFO L858 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-08-29 03:45:11,291 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 03:45:11,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 03:45:11 BoogieIcfgContainer [2021-08-29 03:45:11,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 03:45:11,307 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 03:45:11,308 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 03:45:11,308 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 03:45:11,308 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:45:01" (3/4) ... [2021-08-29 03:45:11,314 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 03:45:11,331 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-08-29 03:45:11,332 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 03:45:11,333 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 03:45:11,334 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 03:45:11,470 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 03:45:11,470 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 03:45:11,471 INFO L158 Benchmark]: Toolchain (without parser) took 11436.34ms. Allocated memory was 50.3MB in the beginning and 157.3MB in the end (delta: 107.0MB). Free memory was 25.4MB in the beginning and 121.1MB in the end (delta: -95.8MB). Peak memory consumption was 32.4MB. Max. memory is 16.1GB. [2021-08-29 03:45:11,471 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 50.3MB. Free memory was 32.8MB in the beginning and 32.7MB in the end (delta: 46.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 03:45:11,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 492.74ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 25.2MB in the beginning and 44.4MB in the end (delta: -19.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-08-29 03:45:11,471 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.02ms. Allocated memory is still 65.0MB. Free memory was 44.2MB in the beginning and 38.6MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 03:45:11,472 INFO L158 Benchmark]: Boogie Preprocessor took 72.50ms. Allocated memory is still 65.0MB. Free memory was 38.6MB in the beginning and 34.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 03:45:11,472 INFO L158 Benchmark]: RCFGBuilder took 561.10ms. Allocated memory is still 65.0MB. Free memory was 34.3MB in the beginning and 31.1MB in the end (delta: 3.2MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2021-08-29 03:45:11,472 INFO L158 Benchmark]: TraceAbstraction took 10059.48ms. Allocated memory was 65.0MB in the beginning and 157.3MB in the end (delta: 92.3MB). Free memory was 30.5MB in the beginning and 107.9MB in the end (delta: -77.4MB). Peak memory consumption was 82.1MB. Max. memory is 16.1GB. [2021-08-29 03:45:11,473 INFO L158 Benchmark]: Witness Printer took 162.76ms. Allocated memory is still 157.3MB. Free memory was 107.9MB in the beginning and 121.1MB in the end (delta: -13.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-29 03:45:11,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 50.3MB. Free memory was 32.8MB in the beginning and 32.7MB in the end (delta: 46.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 492.74ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 25.2MB in the beginning and 44.4MB in the end (delta: -19.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.02ms. Allocated memory is still 65.0MB. Free memory was 44.2MB in the beginning and 38.6MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.50ms. Allocated memory is still 65.0MB. Free memory was 38.6MB in the beginning and 34.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 561.10ms. Allocated memory is still 65.0MB. Free memory was 34.3MB in the beginning and 31.1MB in the end (delta: 3.2MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * TraceAbstraction took 10059.48ms. Allocated memory was 65.0MB in the beginning and 157.3MB in the end (delta: 92.3MB). Free memory was 30.5MB in the beginning and 107.9MB in the end (delta: -77.4MB). Peak memory consumption was 82.1MB. Max. memory is 16.1GB. * Witness Printer took 162.76ms. Allocated memory is still 157.3MB. Free memory was 107.9MB in the beginning and 121.1MB in the end (delta: -13.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 489]: 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, 198 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9998.63ms, OverallIterations: 10, TraceHistogramMax: 5, EmptinessCheckTime: 54.94ms, AutomataDifference: 4936.13ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 177.28ms, InitialAbstractionConstructionTime: 11.99ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1278 SdHoareTripleChecker+Valid, 4375.95ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1278 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 3498.02ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 73 mSDsCounter, 692 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4846 IncrementalHoareTripleChecker+Invalid, 5538 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 692 mSolverCounterUnsat, 0 mSDtfsCounter, 4846 mSolverCounterSat, 26.07ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 736 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 118.02ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1707occurred in iteration=8, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 334.68ms AutomataMinimizationTime, 10 MinimizatonAttempts, 1965 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 38 NumberOfFragments, 51 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3604 FormulaSimplificationTreeSizeReduction, 73.35ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 372 FormulaSimplificationTreeSizeReductionInter, 97.53ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 148.78ms SsaConstructionTime, 445.43ms SatisfiabilityAnalysisTime, 2421.81ms InterpolantComputationTime, 2102 NumberOfCodeBlocks, 2102 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2087 ConstructedInterpolants, 0 QuantifiedInterpolants, 7935 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1584 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 15 InterpolantComputations, 10 PerfectInterpolantSequences, 921/962 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 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((a8 <= 14 && a17 == 1) && a16 <= 5) || a17 <= 0) || ((!(a7 == 1) && a21 == 1) && a17 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((a8 <= 14 && a17 == 1) && a16 <= 5) || a17 <= 0) || ((!(a7 == 1) && a21 == 1) && a17 == 1) RESULT: Ultimate proved your program to be correct! [2021-08-29 03:45:11,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...