./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem14_label53.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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/Problem14_label53.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 f09951f8169d75602552a0c69d410baacae8493e4742c50eb18d4008647dffd9 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 09:26:30,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 09:26:30,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 09:26:30,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 09:26:30,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 09:26:30,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 09:26:30,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 09:26:30,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 09:26:30,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 09:26:30,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 09:26:30,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 09:26:30,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 09:26:30,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 09:26:30,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 09:26:30,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 09:26:30,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 09:26:30,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 09:26:30,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 09:26:30,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 09:26:30,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 09:26:30,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 09:26:30,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 09:26:30,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 09:26:30,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 09:26:30,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 09:26:30,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 09:26:30,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 09:26:30,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 09:26:30,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 09:26:30,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 09:26:30,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 09:26:30,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 09:26:30,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 09:26:30,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 09:26:30,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 09:26:30,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 09:26:30,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 09:26:30,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 09:26:30,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 09:26:30,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 09:26:30,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 09:26:30,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 09:26:30,386 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 09:26:30,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 09:26:30,386 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 09:26:30,386 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 09:26:30,387 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 09:26:30,387 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 09:26:30,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 09:26:30,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 09:26:30,388 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 09:26:30,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 09:26:30,388 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 09:26:30,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 09:26:30,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 09:26:30,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 09:26:30,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 09:26:30,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 09:26:30,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 09:26:30,389 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 09:26:30,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 09:26:30,390 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 09:26:30,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 09:26:30,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 09:26:30,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 09:26:30,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 09:26:30,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 09:26:30,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 09:26:30,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 09:26:30,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 09:26:30,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 09:26:30,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 09:26:30,392 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 09:26:30,392 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 09:26:30,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 09:26:30,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 09:26:30,392 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f09951f8169d75602552a0c69d410baacae8493e4742c50eb18d4008647dffd9 [2021-12-22 09:26:30,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 09:26:30,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 09:26:30,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 09:26:30,587 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 09:26:30,588 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 09:26:30,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label53.c [2021-12-22 09:26:30,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e1988ac/5ea49483b82848488404da007ba19316/FLAGc1be6659f [2021-12-22 09:26:31,106 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 09:26:31,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label53.c [2021-12-22 09:26:31,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e1988ac/5ea49483b82848488404da007ba19316/FLAGc1be6659f [2021-12-22 09:26:31,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e1988ac/5ea49483b82848488404da007ba19316 [2021-12-22 09:26:31,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 09:26:31,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 09:26:31,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 09:26:31,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 09:26:31,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 09:26:31,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:26:31" (1/1) ... [2021-12-22 09:26:31,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ebc314d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:31, skipping insertion in model container [2021-12-22 09:26:31,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:26:31" (1/1) ... [2021-12-22 09:26:31,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 09:26:31,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 09:26:31,842 WARN L230 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/Problem14_label53.c[5103,5116] [2021-12-22 09:26:32,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 09:26:32,014 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 09:26:32,038 WARN L230 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/Problem14_label53.c[5103,5116] [2021-12-22 09:26:32,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 09:26:32,113 INFO L208 MainTranslator]: Completed translation [2021-12-22 09:26:32,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:32 WrapperNode [2021-12-22 09:26:32,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 09:26:32,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 09:26:32,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 09:26:32,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 09:26:32,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:32" (1/1) ... [2021-12-22 09:26:32,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:32" (1/1) ... [2021-12-22 09:26:32,213 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 858 [2021-12-22 09:26:32,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 09:26:32,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 09:26:32,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 09:26:32,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 09:26:32,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:32" (1/1) ... [2021-12-22 09:26:32,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:32" (1/1) ... [2021-12-22 09:26:32,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:32" (1/1) ... [2021-12-22 09:26:32,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:32" (1/1) ... [2021-12-22 09:26:32,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:32" (1/1) ... [2021-12-22 09:26:32,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:32" (1/1) ... [2021-12-22 09:26:32,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:32" (1/1) ... [2021-12-22 09:26:32,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 09:26:32,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 09:26:32,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 09:26:32,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 09:26:32,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:32" (1/1) ... [2021-12-22 09:26:32,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 09:26:32,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:26:32,340 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) [2021-12-22 09:26:32,357 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 [2021-12-22 09:26:32,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 09:26:32,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 09:26:32,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 09:26:32,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 09:26:32,421 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 09:26:32,423 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 09:26:33,270 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 09:26:33,280 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 09:26:33,280 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 09:26:33,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:26:33 BoogieIcfgContainer [2021-12-22 09:26:33,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 09:26:33,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 09:26:33,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 09:26:33,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 09:26:33,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:26:31" (1/3) ... [2021-12-22 09:26:33,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2600f055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:26:33, skipping insertion in model container [2021-12-22 09:26:33,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:26:32" (2/3) ... [2021-12-22 09:26:33,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2600f055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:26:33, skipping insertion in model container [2021-12-22 09:26:33,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:26:33" (3/3) ... [2021-12-22 09:26:33,290 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label53.c [2021-12-22 09:26:33,296 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 09:26:33,297 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 09:26:33,330 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 09:26:33,335 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, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-12-22 09:26:33,335 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 09:26:33,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:33,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-22 09:26:33,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:33,354 INFO L514 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] [2021-12-22 09:26:33,355 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:33,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:33,358 INFO L85 PathProgramCache]: Analyzing trace with hash 301649817, now seen corresponding path program 1 times [2021-12-22 09:26:33,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:33,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441211291] [2021-12-22 09:26:33,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:33,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 09:26:33,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:33,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441211291] [2021-12-22 09:26:33,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441211291] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:33,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:33,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:33,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532353857] [2021-12-22 09:26:33,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:33,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:26:33,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:33,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:26:33,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:26:33,671 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 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 12.25) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:34,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:34,777 INFO L93 Difference]: Finished difference Result 852 states and 1560 transitions. [2021-12-22 09:26:34,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:26:34,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-12-22 09:26:34,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:34,794 INFO L225 Difference]: With dead ends: 852 [2021-12-22 09:26:34,795 INFO L226 Difference]: Without dead ends: 538 [2021-12-22 09:26:34,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 09:26:34,800 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 534 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:34,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 44 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 09:26:34,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-12-22 09:26:34,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2021-12-22 09:26:34,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.4487895716945995) internal successors, (778), 537 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:34,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 778 transitions. [2021-12-22 09:26:34,876 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 778 transitions. Word has length 49 [2021-12-22 09:26:34,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:34,877 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 778 transitions. [2021-12-22 09:26:34,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:34,877 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 778 transitions. [2021-12-22 09:26:34,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-12-22 09:26:34,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:34,890 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:34,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 09:26:34,890 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:34,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:34,891 INFO L85 PathProgramCache]: Analyzing trace with hash -265131167, now seen corresponding path program 1 times [2021-12-22 09:26:34,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:34,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370119124] [2021-12-22 09:26:34,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:34,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:35,056 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-22 09:26:35,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:35,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370119124] [2021-12-22 09:26:35,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370119124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:35,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:35,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 09:26:35,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548973997] [2021-12-22 09:26:35,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:35,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:35,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:35,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:35,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:35,060 INFO L87 Difference]: Start difference. First operand 538 states and 778 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:35,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:35,490 INFO L93 Difference]: Finished difference Result 1074 states and 1656 transitions. [2021-12-22 09:26:35,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:35,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 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 197 [2021-12-22 09:26:35,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:35,494 INFO L225 Difference]: With dead ends: 1074 [2021-12-22 09:26:35,494 INFO L226 Difference]: Without dead ends: 716 [2021-12-22 09:26:35,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:35,496 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 125 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:35,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 57 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:26:35,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-12-22 09:26:35,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2021-12-22 09:26:35,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.353846153846154) internal successors, (968), 715 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:35,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 968 transitions. [2021-12-22 09:26:35,536 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 968 transitions. Word has length 197 [2021-12-22 09:26:35,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:35,537 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 968 transitions. [2021-12-22 09:26:35,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:35,537 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 968 transitions. [2021-12-22 09:26:35,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-12-22 09:26:35,557 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:35,557 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 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] [2021-12-22 09:26:35,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 09:26:35,558 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:35,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:35,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1568066862, now seen corresponding path program 1 times [2021-12-22 09:26:35,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:35,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87517940] [2021-12-22 09:26:35,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:35,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:35,696 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 09:26:35,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:35,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87517940] [2021-12-22 09:26:35,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87517940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:35,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:35,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:35,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102091911] [2021-12-22 09:26:35,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:35,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:26:35,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:35,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:26:35,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:26:35,700 INFO L87 Difference]: Start difference. First operand 716 states and 968 transitions. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:36,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:36,295 INFO L93 Difference]: Finished difference Result 1637 states and 2268 transitions. [2021-12-22 09:26:36,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:26:36,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 220 [2021-12-22 09:26:36,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:36,300 INFO L225 Difference]: With dead ends: 1637 [2021-12-22 09:26:36,300 INFO L226 Difference]: Without dead ends: 1072 [2021-12-22 09:26:36,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:26:36,303 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 112 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:36,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 113 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 09:26:36,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-12-22 09:26:36,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 894. [2021-12-22 09:26:36,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 1.1724524076147815) internal successors, (1047), 893 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:36,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1047 transitions. [2021-12-22 09:26:36,322 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1047 transitions. Word has length 220 [2021-12-22 09:26:36,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:36,322 INFO L470 AbstractCegarLoop]: Abstraction has 894 states and 1047 transitions. [2021-12-22 09:26:36,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:36,323 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1047 transitions. [2021-12-22 09:26:36,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2021-12-22 09:26:36,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:36,327 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:36,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 09:26:36,328 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:36,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:36,329 INFO L85 PathProgramCache]: Analyzing trace with hash 555922922, now seen corresponding path program 1 times [2021-12-22 09:26:36,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:36,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690311871] [2021-12-22 09:26:36,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:36,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:36,627 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 204 proven. 130 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-22 09:26:36,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:36,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690311871] [2021-12-22 09:26:36,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690311871] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:26:36,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301074419] [2021-12-22 09:26:36,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:36,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:36,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:26:36,637 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) [2021-12-22 09:26:36,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 09:26:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:36,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 09:26:36,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:26:37,260 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-12-22 09:26:37,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:26:37,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301074419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:37,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:26:37,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-12-22 09:26:37,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626980862] [2021-12-22 09:26:37,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:37,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:37,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:37,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:37,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:37,263 INFO L87 Difference]: Start difference. First operand 894 states and 1047 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:37,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:37,713 INFO L93 Difference]: Finished difference Result 2320 states and 2778 transitions. [2021-12-22 09:26:37,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:37,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 351 [2021-12-22 09:26:37,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:37,719 INFO L225 Difference]: With dead ends: 2320 [2021-12-22 09:26:37,719 INFO L226 Difference]: Without dead ends: 1606 [2021-12-22 09:26:37,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:37,721 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 132 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:37,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 265 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:26:37,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-12-22 09:26:37,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1428. [2021-12-22 09:26:37,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 1.1401541695865451) internal successors, (1627), 1427 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:37,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1627 transitions. [2021-12-22 09:26:37,741 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1627 transitions. Word has length 351 [2021-12-22 09:26:37,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:37,742 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1627 transitions. [2021-12-22 09:26:37,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:37,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1627 transitions. [2021-12-22 09:26:37,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2021-12-22 09:26:37,763 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:37,763 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:37,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 09:26:37,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:37,981 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:37,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:37,982 INFO L85 PathProgramCache]: Analyzing trace with hash 303978021, now seen corresponding path program 1 times [2021-12-22 09:26:37,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:37,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018575673] [2021-12-22 09:26:37,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:37,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:38,094 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 595 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-22 09:26:38,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:38,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018575673] [2021-12-22 09:26:38,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018575673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:38,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:38,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:38,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437493301] [2021-12-22 09:26:38,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:38,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:38,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:38,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:38,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:38,097 INFO L87 Difference]: Start difference. First operand 1428 states and 1627 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:38,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:38,554 INFO L93 Difference]: Finished difference Result 3210 states and 3757 transitions. [2021-12-22 09:26:38,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:38,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 450 [2021-12-22 09:26:38,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:38,560 INFO L225 Difference]: With dead ends: 3210 [2021-12-22 09:26:38,560 INFO L226 Difference]: Without dead ends: 1962 [2021-12-22 09:26:38,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:38,562 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:38,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 77 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:26:38,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2021-12-22 09:26:38,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1784. [2021-12-22 09:26:38,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1783 states have (on average 1.134043746494672) internal successors, (2022), 1783 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:38,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2022 transitions. [2021-12-22 09:26:38,589 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2022 transitions. Word has length 450 [2021-12-22 09:26:38,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:38,590 INFO L470 AbstractCegarLoop]: Abstraction has 1784 states and 2022 transitions. [2021-12-22 09:26:38,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:38,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2022 transitions. [2021-12-22 09:26:38,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2021-12-22 09:26:38,595 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:38,595 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:38,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 09:26:38,596 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:38,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:38,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1651652833, now seen corresponding path program 1 times [2021-12-22 09:26:38,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:38,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896276373] [2021-12-22 09:26:38,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:38,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 574 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-12-22 09:26:38,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:38,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896276373] [2021-12-22 09:26:38,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896276373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:38,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:38,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:38,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200831841] [2021-12-22 09:26:38,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:38,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:26:38,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:38,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:26:38,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:26:38,702 INFO L87 Difference]: Start difference. First operand 1784 states and 2022 transitions. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:39,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:39,327 INFO L93 Difference]: Finished difference Result 3744 states and 4238 transitions. [2021-12-22 09:26:39,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:26:39,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 474 [2021-12-22 09:26:39,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:39,333 INFO L225 Difference]: With dead ends: 3744 [2021-12-22 09:26:39,333 INFO L226 Difference]: Without dead ends: 2140 [2021-12-22 09:26:39,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:26:39,335 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 126 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:39,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 90 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 09:26:39,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2021-12-22 09:26:39,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 2140. [2021-12-22 09:26:39,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2139 states have (on average 1.11781206171108) internal successors, (2391), 2139 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:39,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2391 transitions. [2021-12-22 09:26:39,364 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2391 transitions. Word has length 474 [2021-12-22 09:26:39,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:39,365 INFO L470 AbstractCegarLoop]: Abstraction has 2140 states and 2391 transitions. [2021-12-22 09:26:39,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:39,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2391 transitions. [2021-12-22 09:26:39,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2021-12-22 09:26:39,371 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:39,372 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:39,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 09:26:39,372 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:39,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:39,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1089264344, now seen corresponding path program 1 times [2021-12-22 09:26:39,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:39,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96919246] [2021-12-22 09:26:39,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:39,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 731 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2021-12-22 09:26:39,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:39,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96919246] [2021-12-22 09:26:39,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96919246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:39,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:39,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:39,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116892720] [2021-12-22 09:26:39,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:39,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:26:39,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:39,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:26:39,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:26:39,507 INFO L87 Difference]: Start difference. First operand 2140 states and 2391 transitions. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:39,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:39,995 INFO L93 Difference]: Finished difference Result 4336 states and 4849 transitions. [2021-12-22 09:26:39,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:26:39,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 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 530 [2021-12-22 09:26:39,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:40,011 INFO L225 Difference]: With dead ends: 4336 [2021-12-22 09:26:40,012 INFO L226 Difference]: Without dead ends: 2318 [2021-12-22 09:26:40,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:26:40,017 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 142 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:40,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 17 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:26:40,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-12-22 09:26:40,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 2140. [2021-12-22 09:26:40,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2139 states have (on average 1.0855539971949508) internal successors, (2322), 2139 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:40,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2322 transitions. [2021-12-22 09:26:40,045 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2322 transitions. Word has length 530 [2021-12-22 09:26:40,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:40,046 INFO L470 AbstractCegarLoop]: Abstraction has 2140 states and 2322 transitions. [2021-12-22 09:26:40,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:40,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2322 transitions. [2021-12-22 09:26:40,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2021-12-22 09:26:40,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:40,051 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:40,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 09:26:40,052 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:40,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:40,052 INFO L85 PathProgramCache]: Analyzing trace with hash -970210919, now seen corresponding path program 2 times [2021-12-22 09:26:40,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:40,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533803355] [2021-12-22 09:26:40,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:40,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:40,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 819 proven. 11 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-12-22 09:26:40,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:40,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533803355] [2021-12-22 09:26:40,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533803355] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:26:40,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694516492] [2021-12-22 09:26:40,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 09:26:40,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:40,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:26:40,236 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) [2021-12-22 09:26:40,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 09:26:40,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 09:26:40,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 09:26:40,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 09:26:40,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:26:41,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 830 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-12-22 09:26:41,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:26:41,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694516492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:41,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:26:41,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-22 09:26:41,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775845484] [2021-12-22 09:26:41,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:41,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:26:41,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:41,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:26:41,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:41,295 INFO L87 Difference]: Start difference. First operand 2140 states and 2322 transitions. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:41,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:41,942 INFO L93 Difference]: Finished difference Result 4990 states and 5475 transitions. [2021-12-22 09:26:41,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:26:41,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 556 [2021-12-22 09:26:41,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:41,951 INFO L225 Difference]: With dead ends: 4990 [2021-12-22 09:26:41,951 INFO L226 Difference]: Without dead ends: 3030 [2021-12-22 09:26:41,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:41,956 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 236 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:41,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 14 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 09:26:41,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2021-12-22 09:26:41,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 2496. [2021-12-22 09:26:41,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2495 states have (on average 1.0789579158316633) internal successors, (2692), 2495 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:41,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 2692 transitions. [2021-12-22 09:26:41,991 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 2692 transitions. Word has length 556 [2021-12-22 09:26:41,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:41,992 INFO L470 AbstractCegarLoop]: Abstraction has 2496 states and 2692 transitions. [2021-12-22 09:26:41,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:41,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 2692 transitions. [2021-12-22 09:26:41,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2021-12-22 09:26:41,996 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:41,997 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:42,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 09:26:42,215 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,SelfDestructingSolverStorable7 [2021-12-22 09:26:42,216 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:42,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:42,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1613402830, now seen corresponding path program 1 times [2021-12-22 09:26:42,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:42,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110535616] [2021-12-22 09:26:42,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:42,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1193 backedges. 832 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-12-22 09:26:42,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:42,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110535616] [2021-12-22 09:26:42,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110535616] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:42,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:42,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:42,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996435470] [2021-12-22 09:26:42,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:42,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:42,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:42,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:42,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:42,358 INFO L87 Difference]: Start difference. First operand 2496 states and 2692 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:42,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:42,804 INFO L93 Difference]: Finished difference Result 5702 states and 6216 transitions. [2021-12-22 09:26:42,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:42,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 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 563 [2021-12-22 09:26:42,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:42,812 INFO L225 Difference]: With dead ends: 5702 [2021-12-22 09:26:42,812 INFO L226 Difference]: Without dead ends: 3386 [2021-12-22 09:26:42,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:42,816 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 73 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:42,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 203 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:26:42,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2021-12-22 09:26:42,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3208. [2021-12-22 09:26:42,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 3207 states have (on average 1.0770190208917991) internal successors, (3454), 3207 states have internal predecessors, (3454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:42,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 3454 transitions. [2021-12-22 09:26:42,856 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 3454 transitions. Word has length 563 [2021-12-22 09:26:42,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:42,856 INFO L470 AbstractCegarLoop]: Abstraction has 3208 states and 3454 transitions. [2021-12-22 09:26:42,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:42,857 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 3454 transitions. [2021-12-22 09:26:42,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2021-12-22 09:26:42,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:42,862 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-22 09:26:42,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 09:26:42,862 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:42,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:42,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1315980517, now seen corresponding path program 1 times [2021-12-22 09:26:42,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:42,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337846786] [2021-12-22 09:26:42,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:42,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:43,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1193 backedges. 846 proven. 195 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-22 09:26:43,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:43,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337846786] [2021-12-22 09:26:43,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337846786] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:26:43,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919630525] [2021-12-22 09:26:43,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:43,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:43,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:26:43,037 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) [2021-12-22 09:26:43,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 09:26:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:43,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 09:26:43,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:26:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1193 backedges. 514 proven. 0 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2021-12-22 09:26:43,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:26:43,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919630525] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:43,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:26:43,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-22 09:26:43,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719460041] [2021-12-22 09:26:43,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:43,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:43,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:43,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:43,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:43,988 INFO L87 Difference]: Start difference. First operand 3208 states and 3454 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 2 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:44,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:44,366 INFO L93 Difference]: Finished difference Result 6948 states and 7481 transitions. [2021-12-22 09:26:44,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:44,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 2 states have internal predecessors, (247), 0 states have call successors, (0), 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 608 [2021-12-22 09:26:44,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:44,375 INFO L225 Difference]: With dead ends: 6948 [2021-12-22 09:26:44,375 INFO L226 Difference]: Without dead ends: 3920 [2021-12-22 09:26:44,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:44,378 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 27 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:44,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 50 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:26:44,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3920 states. [2021-12-22 09:26:44,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3920 to 3386. [2021-12-22 09:26:44,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 1.0782865583456425) internal successors, (3650), 3385 states have internal predecessors, (3650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:44,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 3650 transitions. [2021-12-22 09:26:44,418 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 3650 transitions. Word has length 608 [2021-12-22 09:26:44,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:44,419 INFO L470 AbstractCegarLoop]: Abstraction has 3386 states and 3650 transitions. [2021-12-22 09:26:44,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 2 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:44,419 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 3650 transitions. [2021-12-22 09:26:44,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2021-12-22 09:26:44,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:44,424 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2021-12-22 09:26:44,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 09:26:44,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:44,640 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:44,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:44,641 INFO L85 PathProgramCache]: Analyzing trace with hash 186723207, now seen corresponding path program 1 times [2021-12-22 09:26:44,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:44,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864516901] [2021-12-22 09:26:44,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:44,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:44,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 837 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-12-22 09:26:44,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:44,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864516901] [2021-12-22 09:26:44,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864516901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:44,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:44,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:44,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567297786] [2021-12-22 09:26:44,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:44,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:44,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:44,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:44,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:44,788 INFO L87 Difference]: Start difference. First operand 3386 states and 3650 transitions. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:45,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:45,207 INFO L93 Difference]: Finished difference Result 8016 states and 8717 transitions. [2021-12-22 09:26:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:45,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 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 630 [2021-12-22 09:26:45,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:45,219 INFO L225 Difference]: With dead ends: 8016 [2021-12-22 09:26:45,219 INFO L226 Difference]: Without dead ends: 4810 [2021-12-22 09:26:45,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:45,223 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:45,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 52 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:26:45,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2021-12-22 09:26:45,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4810. [2021-12-22 09:26:45,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 1.0721563734664172) internal successors, (5156), 4809 states have internal predecessors, (5156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 5156 transitions. [2021-12-22 09:26:45,290 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 5156 transitions. Word has length 630 [2021-12-22 09:26:45,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:45,291 INFO L470 AbstractCegarLoop]: Abstraction has 4810 states and 5156 transitions. [2021-12-22 09:26:45,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:45,291 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 5156 transitions. [2021-12-22 09:26:45,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2021-12-22 09:26:45,297 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:45,298 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:45,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 09:26:45,298 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:45,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:45,299 INFO L85 PathProgramCache]: Analyzing trace with hash -2069628610, now seen corresponding path program 1 times [2021-12-22 09:26:45,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:45,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973585616] [2021-12-22 09:26:45,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:45,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:45,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 1525 proven. 0 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2021-12-22 09:26:45,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:45,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973585616] [2021-12-22 09:26:45,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973585616] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:45,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:45,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:45,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127939507] [2021-12-22 09:26:45,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:45,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:45,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:45,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:45,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:45,525 INFO L87 Difference]: Start difference. First operand 4810 states and 5156 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:45,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:45,924 INFO L93 Difference]: Finished difference Result 9618 states and 10325 transitions. [2021-12-22 09:26:45,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:45,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 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 709 [2021-12-22 09:26:45,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:45,949 INFO L225 Difference]: With dead ends: 9618 [2021-12-22 09:26:45,950 INFO L226 Difference]: Without dead ends: 4988 [2021-12-22 09:26:45,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:45,955 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 102 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:45,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 243 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:26:45,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2021-12-22 09:26:46,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 4454. [2021-12-22 09:26:46,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4453 states have (on average 1.0700651246350774) internal successors, (4765), 4453 states have internal predecessors, (4765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:46,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 4765 transitions. [2021-12-22 09:26:46,025 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 4765 transitions. Word has length 709 [2021-12-22 09:26:46,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:46,025 INFO L470 AbstractCegarLoop]: Abstraction has 4454 states and 4765 transitions. [2021-12-22 09:26:46,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:46,026 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 4765 transitions. [2021-12-22 09:26:46,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2021-12-22 09:26:46,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:46,031 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-22 09:26:46,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 09:26:46,032 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:46,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:46,032 INFO L85 PathProgramCache]: Analyzing trace with hash -287829589, now seen corresponding path program 1 times [2021-12-22 09:26:46,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:46,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106724618] [2021-12-22 09:26:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:46,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1805 backedges. 1289 proven. 155 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-12-22 09:26:46,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:46,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106724618] [2021-12-22 09:26:46,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106724618] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:26:46,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557111122] [2021-12-22 09:26:46,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:46,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:46,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:26:46,444 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) [2021-12-22 09:26:46,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 09:26:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:46,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 09:26:46,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:26:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1805 backedges. 1289 proven. 155 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-12-22 09:26:47,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 09:26:48,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1805 backedges. 1289 proven. 155 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-12-22 09:26:48,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557111122] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 09:26:48,611 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 09:26:48,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-12-22 09:26:48,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468390032] [2021-12-22 09:26:48,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 09:26:48,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 09:26:48,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:48,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 09:26:48,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-22 09:26:48,613 INFO L87 Difference]: Start difference. First operand 4454 states and 4765 transitions. Second operand has 6 states, 6 states have (on average 143.66666666666666) internal successors, (862), 6 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:49,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:49,338 INFO L93 Difference]: Finished difference Result 10152 states and 10909 transitions. [2021-12-22 09:26:49,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 09:26:49,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 143.66666666666666) internal successors, (862), 6 states have internal predecessors, (862), 0 states have call successors, (0), 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 785 [2021-12-22 09:26:49,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:49,348 INFO L225 Difference]: With dead ends: 10152 [2021-12-22 09:26:49,348 INFO L226 Difference]: Without dead ends: 5878 [2021-12-22 09:26:49,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1572 GetRequests, 1568 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-22 09:26:49,353 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 75 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:49,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 66 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 09:26:49,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5878 states. [2021-12-22 09:26:49,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5878 to 5166. [2021-12-22 09:26:49,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5166 states, 5165 states have (on average 1.0710551790900291) internal successors, (5532), 5165 states have internal predecessors, (5532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:49,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5166 states to 5166 states and 5532 transitions. [2021-12-22 09:26:49,411 INFO L78 Accepts]: Start accepts. Automaton has 5166 states and 5532 transitions. Word has length 785 [2021-12-22 09:26:49,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:49,411 INFO L470 AbstractCegarLoop]: Abstraction has 5166 states and 5532 transitions. [2021-12-22 09:26:49,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.66666666666666) internal successors, (862), 6 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:49,412 INFO L276 IsEmpty]: Start isEmpty. Operand 5166 states and 5532 transitions. [2021-12-22 09:26:49,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 858 [2021-12-22 09:26:49,430 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:49,431 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-22 09:26:49,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 09:26:49,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:49,649 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:49,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:49,649 INFO L85 PathProgramCache]: Analyzing trace with hash -570726484, now seen corresponding path program 1 times [2021-12-22 09:26:49,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:49,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829238285] [2021-12-22 09:26:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:49,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2283 backedges. 1470 proven. 0 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2021-12-22 09:26:49,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:49,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829238285] [2021-12-22 09:26:49,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829238285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:49,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:49,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:49,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083884120] [2021-12-22 09:26:49,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:49,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:49,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:49,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:49,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:49,820 INFO L87 Difference]: Start difference. First operand 5166 states and 5532 transitions. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:50,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:50,219 INFO L93 Difference]: Finished difference Result 11220 states and 12108 transitions. [2021-12-22 09:26:50,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:50,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 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 857 [2021-12-22 09:26:50,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:50,229 INFO L225 Difference]: With dead ends: 11220 [2021-12-22 09:26:50,229 INFO L226 Difference]: Without dead ends: 6234 [2021-12-22 09:26:50,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:50,234 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 108 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:50,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 33 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:26:50,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2021-12-22 09:26:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 6234. [2021-12-22 09:26:50,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6234 states, 6233 states have (on average 1.074923792716188) internal successors, (6700), 6233 states have internal predecessors, (6700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:50,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6234 states to 6234 states and 6700 transitions. [2021-12-22 09:26:50,326 INFO L78 Accepts]: Start accepts. Automaton has 6234 states and 6700 transitions. Word has length 857 [2021-12-22 09:26:50,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:50,327 INFO L470 AbstractCegarLoop]: Abstraction has 6234 states and 6700 transitions. [2021-12-22 09:26:50,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:50,327 INFO L276 IsEmpty]: Start isEmpty. Operand 6234 states and 6700 transitions. [2021-12-22 09:26:50,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2021-12-22 09:26:50,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:50,338 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-22 09:26:50,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 09:26:50,338 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:50,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:50,339 INFO L85 PathProgramCache]: Analyzing trace with hash -948706177, now seen corresponding path program 1 times [2021-12-22 09:26:50,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:50,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597196554] [2021-12-22 09:26:50,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:50,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 1527 proven. 93 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2021-12-22 09:26:50,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:50,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597196554] [2021-12-22 09:26:50,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597196554] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:26:50,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72264525] [2021-12-22 09:26:50,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:50,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:50,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:26:50,584 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) [2021-12-22 09:26:50,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 09:26:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:50,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 09:26:50,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:26:51,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 1620 proven. 0 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2021-12-22 09:26:51,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:26:51,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72264525] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:51,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:26:51,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-22 09:26:51,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368885938] [2021-12-22 09:26:51,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:51,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:51,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:51,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:51,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 09:26:51,901 INFO L87 Difference]: Start difference. First operand 6234 states and 6700 transitions. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:52,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:52,204 INFO L93 Difference]: Finished difference Result 12644 states and 13591 transitions. [2021-12-22 09:26:52,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:52,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 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 875 [2021-12-22 09:26:52,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:52,213 INFO L225 Difference]: With dead ends: 12644 [2021-12-22 09:26:52,214 INFO L226 Difference]: Without dead ends: 6590 [2021-12-22 09:26:52,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 878 GetRequests, 874 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 09:26:52,221 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:52,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 65 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 09:26:52,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2021-12-22 09:26:52,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 6412. [2021-12-22 09:26:52,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6412 states, 6411 states have (on average 1.0744033692091717) internal successors, (6888), 6411 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6412 states to 6412 states and 6888 transitions. [2021-12-22 09:26:52,290 INFO L78 Accepts]: Start accepts. Automaton has 6412 states and 6888 transitions. Word has length 875 [2021-12-22 09:26:52,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:52,290 INFO L470 AbstractCegarLoop]: Abstraction has 6412 states and 6888 transitions. [2021-12-22 09:26:52,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:52,291 INFO L276 IsEmpty]: Start isEmpty. Operand 6412 states and 6888 transitions. [2021-12-22 09:26:52,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 944 [2021-12-22 09:26:52,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:52,300 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:52,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 09:26:52,540 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,SelfDestructingSolverStorable14 [2021-12-22 09:26:52,541 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:52,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:52,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1100691125, now seen corresponding path program 1 times [2021-12-22 09:26:52,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:52,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554270564] [2021-12-22 09:26:52,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:52,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:52,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 1757 proven. 0 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2021-12-22 09:26:52,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:52,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554270564] [2021-12-22 09:26:52,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554270564] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:52,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:52,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:52,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781781520] [2021-12-22 09:26:52,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:52,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:52,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:52,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:52,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:52,896 INFO L87 Difference]: Start difference. First operand 6412 states and 6888 transitions. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:53,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:53,338 INFO L93 Difference]: Finished difference Result 12466 states and 13415 transitions. [2021-12-22 09:26:53,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:53,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 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 943 [2021-12-22 09:26:53,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:53,347 INFO L225 Difference]: With dead ends: 12466 [2021-12-22 09:26:53,348 INFO L226 Difference]: Without dead ends: 6234 [2021-12-22 09:26:53,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:53,354 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:53,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 227 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:26:53,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2021-12-22 09:26:53,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 6234. [2021-12-22 09:26:53,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6234 states, 6233 states have (on average 1.067222846141505) internal successors, (6652), 6233 states have internal predecessors, (6652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:53,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6234 states to 6234 states and 6652 transitions. [2021-12-22 09:26:53,415 INFO L78 Accepts]: Start accepts. Automaton has 6234 states and 6652 transitions. Word has length 943 [2021-12-22 09:26:53,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:53,416 INFO L470 AbstractCegarLoop]: Abstraction has 6234 states and 6652 transitions. [2021-12-22 09:26:53,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:53,416 INFO L276 IsEmpty]: Start isEmpty. Operand 6234 states and 6652 transitions. [2021-12-22 09:26:53,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2021-12-22 09:26:53,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:53,424 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-22 09:26:53,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 09:26:53,425 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:53,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:53,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1227190264, now seen corresponding path program 1 times [2021-12-22 09:26:53,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:53,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693711371] [2021-12-22 09:26:53,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:53,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:53,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2881 backedges. 1865 proven. 72 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2021-12-22 09:26:53,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:53,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693711371] [2021-12-22 09:26:53,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693711371] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:26:53,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678502762] [2021-12-22 09:26:53,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:53,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:53,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:26:53,720 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 09:26:53,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 09:26:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:53,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 09:26:53,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:26:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2881 backedges. 1578 proven. 0 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2021-12-22 09:26:55,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:26:55,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678502762] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:55,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:26:55,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-12-22 09:26:55,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391655743] [2021-12-22 09:26:55,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:55,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:26:55,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:55,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:26:55,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:55,267 INFO L87 Difference]: Start difference. First operand 6234 states and 6652 transitions. Second operand has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:55,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:55,929 INFO L93 Difference]: Finished difference Result 13534 states and 14441 transitions. [2021-12-22 09:26:55,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:26:55,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 0 states have call successors, (0), 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 952 [2021-12-22 09:26:55,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:55,940 INFO L225 Difference]: With dead ends: 13534 [2021-12-22 09:26:55,940 INFO L226 Difference]: Without dead ends: 7480 [2021-12-22 09:26:55,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 956 GetRequests, 951 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:55,947 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 108 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:55,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 54 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 09:26:55,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7480 states. [2021-12-22 09:26:56,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7480 to 6768. [2021-12-22 09:26:56,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6768 states, 6767 states have (on average 1.0647258755726319) internal successors, (7205), 6767 states have internal predecessors, (7205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:56,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6768 states to 6768 states and 7205 transitions. [2021-12-22 09:26:56,027 INFO L78 Accepts]: Start accepts. Automaton has 6768 states and 7205 transitions. Word has length 952 [2021-12-22 09:26:56,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:56,028 INFO L470 AbstractCegarLoop]: Abstraction has 6768 states and 7205 transitions. [2021-12-22 09:26:56,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:56,028 INFO L276 IsEmpty]: Start isEmpty. Operand 6768 states and 7205 transitions. [2021-12-22 09:26:56,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2021-12-22 09:26:56,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:56,040 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 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] [2021-12-22 09:26:56,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 09:26:56,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-22 09:26:56,260 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:56,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:56,260 INFO L85 PathProgramCache]: Analyzing trace with hash -275538465, now seen corresponding path program 1 times [2021-12-22 09:26:56,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:56,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157733006] [2021-12-22 09:26:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:56,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3627 backedges. 1666 proven. 0 refuted. 0 times theorem prover too weak. 1961 trivial. 0 not checked. [2021-12-22 09:26:56,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:56,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157733006] [2021-12-22 09:26:56,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157733006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:56,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:56,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 09:26:56,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852953501] [2021-12-22 09:26:56,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:56,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 09:26:56,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:56,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 09:26:56,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:56,566 INFO L87 Difference]: Start difference. First operand 6768 states and 7205 transitions. Second operand has 7 states, 7 states have (on average 48.857142857142854) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:57,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:57,077 INFO L93 Difference]: Finished difference Result 12944 states and 13771 transitions. [2021-12-22 09:26:57,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 09:26:57,078 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 48.857142857142854) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 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 995 [2021-12-22 09:26:57,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:57,084 INFO L225 Difference]: With dead ends: 12944 [2021-12-22 09:26:57,084 INFO L226 Difference]: Without dead ends: 6056 [2021-12-22 09:26:57,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-22 09:26:57,089 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 93 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:57,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 26 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:26:57,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2021-12-22 09:26:57,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 6056. [2021-12-22 09:26:57,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6056 states, 6055 states have (on average 1.0525185796862098) internal successors, (6373), 6055 states have internal predecessors, (6373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:57,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6056 states to 6056 states and 6373 transitions. [2021-12-22 09:26:57,146 INFO L78 Accepts]: Start accepts. Automaton has 6056 states and 6373 transitions. Word has length 995 [2021-12-22 09:26:57,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:57,147 INFO L470 AbstractCegarLoop]: Abstraction has 6056 states and 6373 transitions. [2021-12-22 09:26:57,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 48.857142857142854) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:57,147 INFO L276 IsEmpty]: Start isEmpty. Operand 6056 states and 6373 transitions. [2021-12-22 09:26:57,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2021-12-22 09:26:57,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:57,155 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:26:57,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 09:26:57,155 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:57,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:57,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1239965185, now seen corresponding path program 1 times [2021-12-22 09:26:57,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:57,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424839337] [2021-12-22 09:26:57,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:57,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3176 backedges. 2056 proven. 0 refuted. 0 times theorem prover too weak. 1120 trivial. 0 not checked. [2021-12-22 09:26:57,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:57,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424839337] [2021-12-22 09:26:57,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424839337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:57,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:26:57,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:26:57,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945690118] [2021-12-22 09:26:57,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:57,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:57,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:57,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:57,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:57,395 INFO L87 Difference]: Start difference. First operand 6056 states and 6373 transitions. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:57,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:26:57,772 INFO L93 Difference]: Finished difference Result 11932 states and 12565 transitions. [2021-12-22 09:26:57,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:26:57,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 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 1038 [2021-12-22 09:26:57,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:26:57,779 INFO L225 Difference]: With dead ends: 11932 [2021-12-22 09:26:57,780 INFO L226 Difference]: Without dead ends: 6056 [2021-12-22 09:26:57,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 09:26:57,788 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 09:26:57,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 219 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 09:26:57,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2021-12-22 09:26:57,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 5878. [2021-12-22 09:26:57,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5878 states, 5877 states have (on average 1.0474732006125573) internal successors, (6156), 5877 states have internal predecessors, (6156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:57,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5878 states to 5878 states and 6156 transitions. [2021-12-22 09:26:57,881 INFO L78 Accepts]: Start accepts. Automaton has 5878 states and 6156 transitions. Word has length 1038 [2021-12-22 09:26:57,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:26:57,882 INFO L470 AbstractCegarLoop]: Abstraction has 5878 states and 6156 transitions. [2021-12-22 09:26:57,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:26:57,882 INFO L276 IsEmpty]: Start isEmpty. Operand 5878 states and 6156 transitions. [2021-12-22 09:26:57,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1113 [2021-12-22 09:26:57,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:26:57,893 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2021-12-22 09:26:57,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 09:26:57,893 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:26:57,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:26:57,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1758745810, now seen corresponding path program 1 times [2021-12-22 09:26:57,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:26:57,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080555009] [2021-12-22 09:26:57,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:57,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:26:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3504 backedges. 1611 proven. 95 refuted. 0 times theorem prover too weak. 1798 trivial. 0 not checked. [2021-12-22 09:26:58,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:26:58,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080555009] [2021-12-22 09:26:58,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080555009] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:26:58,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751574785] [2021-12-22 09:26:58,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:26:58,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:26:58,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:26:58,212 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 09:26:58,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 09:26:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:26:58,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1359 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 09:26:58,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:26:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3504 backedges. 1706 proven. 0 refuted. 0 times theorem prover too weak. 1798 trivial. 0 not checked. [2021-12-22 09:26:59,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:26:59,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751574785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:26:59,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:26:59,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-22 09:26:59,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082364626] [2021-12-22 09:26:59,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:26:59,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:26:59,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:26:59,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:26:59,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 09:26:59,707 INFO L87 Difference]: Start difference. First operand 5878 states and 6156 transitions. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:00,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:27:00,069 INFO L93 Difference]: Finished difference Result 11754 states and 12310 transitions. [2021-12-22 09:27:00,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:27:00,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 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 1112 [2021-12-22 09:27:00,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:27:00,076 INFO L225 Difference]: With dead ends: 11754 [2021-12-22 09:27:00,076 INFO L226 Difference]: Without dead ends: 6056 [2021-12-22 09:27:00,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1115 GetRequests, 1111 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 09:27:00,082 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 09:27:00,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 221 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 09:27:00,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2021-12-22 09:27:00,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 5700. [2021-12-22 09:27:00,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5700 states, 5699 states have (on average 1.0359712230215827) internal successors, (5904), 5699 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:00,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5700 states to 5700 states and 5904 transitions. [2021-12-22 09:27:00,136 INFO L78 Accepts]: Start accepts. Automaton has 5700 states and 5904 transitions. Word has length 1112 [2021-12-22 09:27:00,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:27:00,137 INFO L470 AbstractCegarLoop]: Abstraction has 5700 states and 5904 transitions. [2021-12-22 09:27:00,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:00,137 INFO L276 IsEmpty]: Start isEmpty. Operand 5700 states and 5904 transitions. [2021-12-22 09:27:00,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1663 [2021-12-22 09:27:00,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:27:00,155 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:27:00,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-22 09:27:00,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:27:00,372 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:27:00,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:27:00,372 INFO L85 PathProgramCache]: Analyzing trace with hash 698233105, now seen corresponding path program 1 times [2021-12-22 09:27:00,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:27:00,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138989802] [2021-12-22 09:27:00,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:27:00,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:27:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:27:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8507 backedges. 1838 proven. 1045 refuted. 0 times theorem prover too weak. 5624 trivial. 0 not checked. [2021-12-22 09:27:00,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:27:00,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138989802] [2021-12-22 09:27:00,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138989802] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:27:00,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396019835] [2021-12-22 09:27:00,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:27:00,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:27:00,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:27:00,952 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 09:27:00,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-22 09:27:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:27:01,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 2025 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 09:27:01,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:27:02,453 INFO L134 CoverageAnalysis]: Checked inductivity of 8507 backedges. 2883 proven. 0 refuted. 0 times theorem prover too weak. 5624 trivial. 0 not checked. [2021-12-22 09:27:02,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:27:02,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396019835] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:27:02,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:27:02,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-22 09:27:02,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479963739] [2021-12-22 09:27:02,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:27:02,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 09:27:02,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:27:02,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 09:27:02,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 09:27:02,455 INFO L87 Difference]: Start difference. First operand 5700 states and 5904 transitions. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:02,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:27:02,851 INFO L93 Difference]: Finished difference Result 12288 states and 12706 transitions. [2021-12-22 09:27:02,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 09:27:02,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 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 1662 [2021-12-22 09:27:02,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:27:02,869 INFO L225 Difference]: With dead ends: 12288 [2021-12-22 09:27:02,879 INFO L226 Difference]: Without dead ends: 4276 [2021-12-22 09:27:02,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1665 GetRequests, 1661 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 09:27:02,884 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:27:02,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 231 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:27:02,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2021-12-22 09:27:02,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 4098. [2021-12-22 09:27:02,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 1.025384427629973) internal successors, (4201), 4097 states have internal predecessors, (4201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:02,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 4201 transitions. [2021-12-22 09:27:02,907 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 4201 transitions. Word has length 1662 [2021-12-22 09:27:02,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:27:02,908 INFO L470 AbstractCegarLoop]: Abstraction has 4098 states and 4201 transitions. [2021-12-22 09:27:02,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:02,909 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 4201 transitions. [2021-12-22 09:27:02,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1716 [2021-12-22 09:27:02,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:27:02,926 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:27:02,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-22 09:27:03,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-22 09:27:03,147 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:27:03,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:27:03,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1333461473, now seen corresponding path program 1 times [2021-12-22 09:27:03,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:27:03,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966863744] [2021-12-22 09:27:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:27:03,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:27:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:27:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9643 backedges. 2874 proven. 0 refuted. 0 times theorem prover too weak. 6769 trivial. 0 not checked. [2021-12-22 09:27:03,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:27:03,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966863744] [2021-12-22 09:27:03,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966863744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:27:03,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:27:03,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:27:03,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357535653] [2021-12-22 09:27:03,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:27:03,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:27:03,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:27:03,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:27:03,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:27:03,642 INFO L87 Difference]: Start difference. First operand 4098 states and 4201 transitions. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:04,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:27:04,003 INFO L93 Difference]: Finished difference Result 8038 states and 8245 transitions. [2021-12-22 09:27:04,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:27:04,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 1715 [2021-12-22 09:27:04,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:27:04,009 INFO L225 Difference]: With dead ends: 8038 [2021-12-22 09:27:04,009 INFO L226 Difference]: Without dead ends: 4276 [2021-12-22 09:27:04,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:27:04,013 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 09:27:04,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 17 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 09:27:04,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2021-12-22 09:27:04,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 4098. [2021-12-22 09:27:04,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 1.0241640224554551) internal successors, (4196), 4097 states have internal predecessors, (4196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:04,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 4196 transitions. [2021-12-22 09:27:04,076 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 4196 transitions. Word has length 1715 [2021-12-22 09:27:04,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:27:04,076 INFO L470 AbstractCegarLoop]: Abstraction has 4098 states and 4196 transitions. [2021-12-22 09:27:04,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:04,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 4196 transitions. [2021-12-22 09:27:04,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1734 [2021-12-22 09:27:04,099 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:27:04,100 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:27:04,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-22 09:27:04,100 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:27:04,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:27:04,101 INFO L85 PathProgramCache]: Analyzing trace with hash -2019243921, now seen corresponding path program 1 times [2021-12-22 09:27:04,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:27:04,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522125098] [2021-12-22 09:27:04,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:27:04,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:27:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:27:04,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9783 backedges. 1707 proven. 0 refuted. 0 times theorem prover too weak. 8076 trivial. 0 not checked. [2021-12-22 09:27:04,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:27:04,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522125098] [2021-12-22 09:27:04,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522125098] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:27:04,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:27:04,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 09:27:04,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271003648] [2021-12-22 09:27:04,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:27:04,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 09:27:04,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:27:04,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 09:27:04,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-22 09:27:04,706 INFO L87 Difference]: Start difference. First operand 4098 states and 4196 transitions. Second operand has 5 states, 5 states have (on average 64.4) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:05,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:27:05,289 INFO L93 Difference]: Finished difference Result 9275 states and 9530 transitions. [2021-12-22 09:27:05,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 09:27:05,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 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 1733 [2021-12-22 09:27:05,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:27:05,295 INFO L225 Difference]: With dead ends: 9275 [2021-12-22 09:27:05,295 INFO L226 Difference]: Without dead ends: 5522 [2021-12-22 09:27:05,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-22 09:27:05,299 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 135 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 09:27:05,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 20 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 09:27:05,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5522 states. [2021-12-22 09:27:05,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5522 to 4810. [2021-12-22 09:27:05,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 1.0280723643169059) internal successors, (4944), 4809 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:05,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 4944 transitions. [2021-12-22 09:27:05,339 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 4944 transitions. Word has length 1733 [2021-12-22 09:27:05,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:27:05,341 INFO L470 AbstractCegarLoop]: Abstraction has 4810 states and 4944 transitions. [2021-12-22 09:27:05,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:05,341 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 4944 transitions. [2021-12-22 09:27:05,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1739 [2021-12-22 09:27:05,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:27:05,359 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:27:05,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-22 09:27:05,359 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:27:05,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:27:05,360 INFO L85 PathProgramCache]: Analyzing trace with hash 636915005, now seen corresponding path program 1 times [2021-12-22 09:27:05,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:27:05,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888024617] [2021-12-22 09:27:05,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:27:05,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:27:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:27:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 9838 backedges. 657 proven. 0 refuted. 0 times theorem prover too weak. 9181 trivial. 0 not checked. [2021-12-22 09:27:05,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:27:05,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888024617] [2021-12-22 09:27:05,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888024617] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:27:05,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:27:05,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 09:27:05,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953013827] [2021-12-22 09:27:05,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:27:05,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:27:05,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:27:05,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:27:05,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:27:05,943 INFO L87 Difference]: Start difference. First operand 4810 states and 4944 transitions. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:06,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:27:06,360 INFO L93 Difference]: Finished difference Result 9452 states and 9721 transitions. [2021-12-22 09:27:06,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:27:06,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 1738 [2021-12-22 09:27:06,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:27:06,365 INFO L225 Difference]: With dead ends: 9452 [2021-12-22 09:27:06,365 INFO L226 Difference]: Without dead ends: 4988 [2021-12-22 09:27:06,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:27:06,368 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:27:06,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 17 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:27:06,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2021-12-22 09:27:06,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 4810. [2021-12-22 09:27:06,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 1.0268247036805989) internal successors, (4938), 4809 states have internal predecessors, (4938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:06,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 4938 transitions. [2021-12-22 09:27:06,414 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 4938 transitions. Word has length 1738 [2021-12-22 09:27:06,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:27:06,415 INFO L470 AbstractCegarLoop]: Abstraction has 4810 states and 4938 transitions. [2021-12-22 09:27:06,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:06,415 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 4938 transitions. [2021-12-22 09:27:06,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1904 [2021-12-22 09:27:06,436 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:27:06,437 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:27:06,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-22 09:27:06,438 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:27:06,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:27:06,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1979324035, now seen corresponding path program 1 times [2021-12-22 09:27:06,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:27:06,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110219476] [2021-12-22 09:27:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:27:06,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:27:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:27:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 11509 backedges. 2425 proven. 812 refuted. 0 times theorem prover too weak. 8272 trivial. 0 not checked. [2021-12-22 09:27:07,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:27:07,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110219476] [2021-12-22 09:27:07,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110219476] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 09:27:07,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065078000] [2021-12-22 09:27:07,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:27:07,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 09:27:07,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 09:27:07,063 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 09:27:07,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-22 09:27:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:27:07,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 2309 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 09:27:07,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 09:27:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 11509 backedges. 3204 proven. 0 refuted. 0 times theorem prover too weak. 8305 trivial. 0 not checked. [2021-12-22 09:27:10,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 09:27:10,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065078000] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:27:10,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 09:27:10,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 8 [2021-12-22 09:27:10,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281206933] [2021-12-22 09:27:10,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:27:10,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 09:27:10,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:27:10,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 09:27:10,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-22 09:27:10,311 INFO L87 Difference]: Start difference. First operand 4810 states and 4938 transitions. Second operand has 7 states, 7 states have (on average 52.857142857142854) internal successors, (370), 6 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:10,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:27:10,794 INFO L93 Difference]: Finished difference Result 9311 states and 9565 transitions. [2021-12-22 09:27:10,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 09:27:10,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 52.857142857142854) internal successors, (370), 6 states have internal predecessors, (370), 0 states have call successors, (0), 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 1903 [2021-12-22 09:27:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:27:10,799 INFO L225 Difference]: With dead ends: 9311 [2021-12-22 09:27:10,799 INFO L226 Difference]: Without dead ends: 4810 [2021-12-22 09:27:10,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1907 GetRequests, 1899 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-22 09:27:10,803 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 89 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 09:27:10,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 28 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 09:27:10,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2021-12-22 09:27:10,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4810. [2021-12-22 09:27:10,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 1.025992929923061) internal successors, (4934), 4809 states have internal predecessors, (4934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:10,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 4934 transitions. [2021-12-22 09:27:10,851 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 4934 transitions. Word has length 1903 [2021-12-22 09:27:10,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:27:10,852 INFO L470 AbstractCegarLoop]: Abstraction has 4810 states and 4934 transitions. [2021-12-22 09:27:10,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.857142857142854) internal successors, (370), 6 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:10,852 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 4934 transitions. [2021-12-22 09:27:10,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2036 [2021-12-22 09:27:10,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 09:27:10,877 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:27:10,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-22 09:27:11,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-22 09:27:11,100 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 09:27:11,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 09:27:11,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1253846088, now seen corresponding path program 1 times [2021-12-22 09:27:11,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 09:27:11,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973064130] [2021-12-22 09:27:11,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 09:27:11,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 09:27:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 09:27:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 13209 backedges. 1965 proven. 0 refuted. 0 times theorem prover too weak. 11244 trivial. 0 not checked. [2021-12-22 09:27:11,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 09:27:11,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973064130] [2021-12-22 09:27:11,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973064130] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 09:27:11,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 09:27:11,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 09:27:11,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181931032] [2021-12-22 09:27:11,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 09:27:11,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 09:27:11,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 09:27:11,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 09:27:11,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:27:11,741 INFO L87 Difference]: Start difference. First operand 4810 states and 4934 transitions. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:12,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 09:27:12,108 INFO L93 Difference]: Finished difference Result 9095 states and 9338 transitions. [2021-12-22 09:27:12,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 09:27:12,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 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 2035 [2021-12-22 09:27:12,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 09:27:12,109 INFO L225 Difference]: With dead ends: 9095 [2021-12-22 09:27:12,109 INFO L226 Difference]: Without dead ends: 0 [2021-12-22 09:27:12,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 09:27:12,113 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 108 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 09:27:12,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 15 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 09:27:12,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-22 09:27:12,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-22 09:27:12,116 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) [2021-12-22 09:27:12,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-22 09:27:12,116 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2035 [2021-12-22 09:27:12,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 09:27:12,116 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 09:27:12,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 09:27:12,116 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-22 09:27:12,117 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-22 09:27:12,120 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 09:27:12,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-22 09:27:12,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-22 09:27:14,207 INFO L858 garLoopResultBuilder]: For program point L762(lines 762 880) no Hoare annotation was computed. [2021-12-22 09:27:14,207 INFO L858 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2021-12-22 09:27:14,207 INFO L858 garLoopResultBuilder]: For program point L829(lines 829 880) no Hoare annotation was computed. [2021-12-22 09:27:14,207 INFO L858 garLoopResultBuilder]: For program point L631(lines 631 880) no Hoare annotation was computed. [2021-12-22 09:27:14,207 INFO L858 garLoopResultBuilder]: For program point L565(lines 565 880) no Hoare annotation was computed. [2021-12-22 09:27:14,207 INFO L858 garLoopResultBuilder]: For program point L169-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L103-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L37-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L698(lines 698 880) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L500(lines 500 880) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L369(lines 369 880) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L303(lines 303 880) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L436(lines 436 880) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L172-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L106-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L40-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L239(lines 239 880) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L768(lines 768 880) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L636(lines 636 880) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L835(lines 835 880) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L571(lines 571 880) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L505(lines 505 880) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L175-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,208 INFO L858 garLoopResultBuilder]: For program point L109-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L43-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L704(lines 704 880) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L309(lines 309 880) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L442(lines 442 880) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L376(lines 376 880) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L178-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L112-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L46-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L245(lines 245 880) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L774(lines 774 880) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L642(lines 642 880) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L510(lines 510 880) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L841(lines 841 880) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L181-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L115-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L49-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L710(lines 710 880) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L578(lines 578 880) no Hoare annotation was computed. [2021-12-22 09:27:14,209 INFO L858 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L315(lines 315 880) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L448(lines 448 880) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L382(lines 382 880) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L184-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L118-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L52-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L251(lines 251 880) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L185(line 185) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L648(lines 648 880) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L516(lines 516 880) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L847(lines 847 880) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L781(lines 781 880) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L583(lines 583 880) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L187-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L121-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L55-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L716(lines 716 880) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2021-12-22 09:27:14,210 INFO L858 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2021-12-22 09:27:14,211 INFO L858 garLoopResultBuilder]: For program point L321(lines 321 880) no Hoare annotation was computed. [2021-12-22 09:27:14,211 INFO L858 garLoopResultBuilder]: For program point L454(lines 454 880) no Hoare annotation was computed. [2021-12-22 09:27:14,211 INFO L858 garLoopResultBuilder]: For program point L388(lines 388 880) no Hoare annotation was computed. [2021-12-22 09:27:14,211 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-22 09:27:14,211 INFO L858 garLoopResultBuilder]: For program point L190-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,211 INFO L858 garLoopResultBuilder]: For program point L124-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,211 INFO L858 garLoopResultBuilder]: For program point L58-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,212 INFO L858 garLoopResultBuilder]: For program point L257(lines 257 880) no Hoare annotation was computed. [2021-12-22 09:27:14,212 INFO L858 garLoopResultBuilder]: For program point L191(line 191) no Hoare annotation was computed. [2021-12-22 09:27:14,212 INFO L858 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-12-22 09:27:14,212 INFO L858 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-12-22 09:27:14,212 INFO L858 garLoopResultBuilder]: For program point L852(lines 852 880) no Hoare annotation was computed. [2021-12-22 09:27:14,213 INFO L858 garLoopResultBuilder]: For program point L654(lines 654 880) no Hoare annotation was computed. [2021-12-22 09:27:14,213 INFO L858 garLoopResultBuilder]: For program point L522(lines 522 880) no Hoare annotation was computed. [2021-12-22 09:27:14,213 INFO L858 garLoopResultBuilder]: For program point L787(lines 787 880) no Hoare annotation was computed. [2021-12-22 09:27:14,213 INFO L858 garLoopResultBuilder]: For program point L589(lines 589 880) no Hoare annotation was computed. [2021-12-22 09:27:14,213 INFO L858 garLoopResultBuilder]: For program point L193-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,213 INFO L858 garLoopResultBuilder]: For program point L127-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,213 INFO L858 garLoopResultBuilder]: For program point L61-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,213 INFO L858 garLoopResultBuilder]: For program point L722(lines 722 880) no Hoare annotation was computed. [2021-12-22 09:27:14,213 INFO L858 garLoopResultBuilder]: For program point L194(line 194) no Hoare annotation was computed. [2021-12-22 09:27:14,214 INFO L858 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2021-12-22 09:27:14,214 INFO L858 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-12-22 09:27:14,214 INFO L858 garLoopResultBuilder]: For program point L459(lines 459 880) no Hoare annotation was computed. [2021-12-22 09:27:14,214 INFO L858 garLoopResultBuilder]: For program point L327(lines 327 880) no Hoare annotation was computed. [2021-12-22 09:27:14,214 INFO L858 garLoopResultBuilder]: For program point L394(lines 394 880) no Hoare annotation was computed. [2021-12-22 09:27:14,214 INFO L858 garLoopResultBuilder]: For program point L262(lines 262 880) no Hoare annotation was computed. [2021-12-22 09:27:14,214 INFO L858 garLoopResultBuilder]: For program point L196-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,214 INFO L858 garLoopResultBuilder]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,214 INFO L858 garLoopResultBuilder]: For program point L64-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,214 INFO L858 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2021-12-22 09:27:14,215 INFO L858 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2021-12-22 09:27:14,215 INFO L858 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2021-12-22 09:27:14,215 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-22 09:27:14,215 INFO L858 garLoopResultBuilder]: For program point L858(lines 858 880) no Hoare annotation was computed. [2021-12-22 09:27:14,215 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 161) no Hoare annotation was computed. [2021-12-22 09:27:14,215 INFO L858 garLoopResultBuilder]: For program point L660(lines 660 880) no Hoare annotation was computed. [2021-12-22 09:27:14,215 INFO L858 garLoopResultBuilder]: For program point L528(lines 528 880) no Hoare annotation was computed. [2021-12-22 09:27:14,215 INFO L858 garLoopResultBuilder]: For program point L793(lines 793 880) no Hoare annotation was computed. [2021-12-22 09:27:14,216 INFO L858 garLoopResultBuilder]: For program point L595(lines 595 880) no Hoare annotation was computed. [2021-12-22 09:27:14,216 INFO L858 garLoopResultBuilder]: For program point L199-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,216 INFO L858 garLoopResultBuilder]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,216 INFO L858 garLoopResultBuilder]: For program point L67-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,216 INFO L858 garLoopResultBuilder]: For program point L728(lines 728 880) no Hoare annotation was computed. [2021-12-22 09:27:14,216 INFO L858 garLoopResultBuilder]: For program point L464(lines 464 880) no Hoare annotation was computed. [2021-12-22 09:27:14,216 INFO L858 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2021-12-22 09:27:14,216 INFO L858 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2021-12-22 09:27:14,217 INFO L858 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-12-22 09:27:14,217 INFO L858 garLoopResultBuilder]: For program point L333(lines 333 880) no Hoare annotation was computed. [2021-12-22 09:27:14,217 INFO L858 garLoopResultBuilder]: For program point L400(lines 400 880) no Hoare annotation was computed. [2021-12-22 09:27:14,217 INFO L858 garLoopResultBuilder]: For program point L268(lines 268 880) no Hoare annotation was computed. [2021-12-22 09:27:14,217 INFO L858 garLoopResultBuilder]: For program point L202-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,217 INFO L858 garLoopResultBuilder]: For program point L136-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,217 INFO L858 garLoopResultBuilder]: For program point L70-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,217 INFO L858 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2021-12-22 09:27:14,217 INFO L858 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2021-12-22 09:27:14,218 INFO L858 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-12-22 09:27:14,218 INFO L858 garLoopResultBuilder]: For program point L864(lines 864 880) no Hoare annotation was computed. [2021-12-22 09:27:14,218 INFO L858 garLoopResultBuilder]: For program point L666(lines 666 880) no Hoare annotation was computed. [2021-12-22 09:27:14,218 INFO L858 garLoopResultBuilder]: For program point L534(lines 534 880) no Hoare annotation was computed. [2021-12-22 09:27:14,218 INFO L858 garLoopResultBuilder]: For program point L799(lines 799 880) no Hoare annotation was computed. [2021-12-22 09:27:14,218 INFO L858 garLoopResultBuilder]: For program point L601(lines 601 880) no Hoare annotation was computed. [2021-12-22 09:27:14,218 INFO L858 garLoopResultBuilder]: For program point L205-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,218 INFO L858 garLoopResultBuilder]: For program point L139-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,218 INFO L858 garLoopResultBuilder]: For program point L73-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,218 INFO L858 garLoopResultBuilder]: For program point L734(lines 734 880) no Hoare annotation was computed. [2021-12-22 09:27:14,219 INFO L858 garLoopResultBuilder]: For program point L470(lines 470 880) no Hoare annotation was computed. [2021-12-22 09:27:14,219 INFO L858 garLoopResultBuilder]: For program point L206(line 206) no Hoare annotation was computed. [2021-12-22 09:27:14,219 INFO L858 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2021-12-22 09:27:14,219 INFO L858 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-12-22 09:27:14,219 INFO L858 garLoopResultBuilder]: For program point L339(lines 339 880) no Hoare annotation was computed. [2021-12-22 09:27:14,219 INFO L858 garLoopResultBuilder]: For program point L406(lines 406 880) no Hoare annotation was computed. [2021-12-22 09:27:14,219 INFO L858 garLoopResultBuilder]: For program point L274(lines 274 880) no Hoare annotation was computed. [2021-12-22 09:27:14,219 INFO L858 garLoopResultBuilder]: For program point L208-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,219 INFO L858 garLoopResultBuilder]: For program point L142-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,219 INFO L858 garLoopResultBuilder]: For program point L76-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,220 INFO L858 garLoopResultBuilder]: For program point L869(lines 869 880) no Hoare annotation was computed. [2021-12-22 09:27:14,220 INFO L858 garLoopResultBuilder]: For program point L209(line 209) no Hoare annotation was computed. [2021-12-22 09:27:14,220 INFO L858 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-12-22 09:27:14,220 INFO L858 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-12-22 09:27:14,220 INFO L858 garLoopResultBuilder]: For program point L672(lines 672 880) no Hoare annotation was computed. [2021-12-22 09:27:14,220 INFO L858 garLoopResultBuilder]: For program point L540(lines 540 880) no Hoare annotation was computed. [2021-12-22 09:27:14,220 INFO L858 garLoopResultBuilder]: For program point L805(lines 805 880) no Hoare annotation was computed. [2021-12-22 09:27:14,220 INFO L858 garLoopResultBuilder]: For program point L607(lines 607 880) no Hoare annotation was computed. [2021-12-22 09:27:14,220 INFO L858 garLoopResultBuilder]: For program point L211-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,221 INFO L858 garLoopResultBuilder]: For program point L145-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,221 INFO L858 garLoopResultBuilder]: For program point L79-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,221 INFO L858 garLoopResultBuilder]: For program point L740(lines 740 880) no Hoare annotation was computed. [2021-12-22 09:27:14,221 INFO L858 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2021-12-22 09:27:14,221 INFO L858 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2021-12-22 09:27:14,221 INFO L858 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2021-12-22 09:27:14,221 INFO L858 garLoopResultBuilder]: For program point L477(lines 477 880) no Hoare annotation was computed. [2021-12-22 09:27:14,221 INFO L858 garLoopResultBuilder]: For program point L345(lines 345 880) no Hoare annotation was computed. [2021-12-22 09:27:14,221 INFO L858 garLoopResultBuilder]: For program point L279(lines 279 880) no Hoare annotation was computed. [2021-12-22 09:27:14,221 INFO L858 garLoopResultBuilder]: For program point L412(lines 412 880) no Hoare annotation was computed. [2021-12-22 09:27:14,222 INFO L858 garLoopResultBuilder]: For program point L148-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,222 INFO L858 garLoopResultBuilder]: For program point L82-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,222 INFO L858 garLoopResultBuilder]: For program point L875(lines 875 880) no Hoare annotation was computed. [2021-12-22 09:27:14,222 INFO L858 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2021-12-22 09:27:14,222 INFO L858 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-12-22 09:27:14,222 INFO L858 garLoopResultBuilder]: For program point L678(lines 678 880) no Hoare annotation was computed. [2021-12-22 09:27:14,222 INFO L858 garLoopResultBuilder]: For program point L546(lines 546 880) no Hoare annotation was computed. [2021-12-22 09:27:14,222 INFO L858 garLoopResultBuilder]: For program point L811(lines 811 880) no Hoare annotation was computed. [2021-12-22 09:27:14,222 INFO L858 garLoopResultBuilder]: For program point L745(lines 745 880) no Hoare annotation was computed. [2021-12-22 09:27:14,222 INFO L858 garLoopResultBuilder]: For program point L613(lines 613 880) no Hoare annotation was computed. [2021-12-22 09:27:14,223 INFO L858 garLoopResultBuilder]: For program point L151-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,223 INFO L858 garLoopResultBuilder]: For program point L85-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,223 INFO L858 garLoopResultBuilder]: For program point L482(lines 482 880) no Hoare annotation was computed. [2021-12-22 09:27:14,223 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-22 09:27:14,223 INFO L858 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2021-12-22 09:27:14,223 INFO L858 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-12-22 09:27:14,223 INFO L858 garLoopResultBuilder]: For program point L351(lines 351 880) no Hoare annotation was computed. [2021-12-22 09:27:14,223 INFO L858 garLoopResultBuilder]: For program point L285(lines 285 880) no Hoare annotation was computed. [2021-12-22 09:27:14,223 INFO L858 garLoopResultBuilder]: For program point L418(lines 418 880) no Hoare annotation was computed. [2021-12-22 09:27:14,223 INFO L858 garLoopResultBuilder]: For program point L154-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,224 INFO L858 garLoopResultBuilder]: For program point L88-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,224 INFO L854 garLoopResultBuilder]: At program point L881(lines 30 882) the Hoare annotation is: (let ((.cse15 (+ ~a12~0 43)) (.cse5 (= 7 ~a15~0))) (let ((.cse3 (<= (+ 49 ~a12~0) 0)) (.cse7 (<= 9 ~a21~0)) (.cse4 (= ~a21~0 10)) (.cse1 (<= 7 ~a21~0)) (.cse9 (<= ~a15~0 8)) (.cse10 (not .cse5)) (.cse8 (<= ~a21~0 9)) (.cse2 (<= ~a15~0 7)) (.cse12 (< 0 .cse15)) (.cse6 (<= ~a12~0 586307)) (.cse0 (= ~a24~0 1)) (.cse14 (<= 10 ~a21~0)) (.cse11 (<= ~a12~0 599999)) (.cse13 (<= 8 ~a15~0))) (or (and .cse0 .cse1 .cse2 (<= ~a21~0 7)) (and .cse0 (= 7 ~a21~0) .cse3 (= ~a15~0 8)) (and .cse0 (not (<= ~a12~0 80)) .cse4 .cse5) (and .cse0 (<= 8 ~a21~0) (<= ~a21~0 8) .cse6) (and .cse7 .cse8 .cse0 .cse9 .cse3) (and (<= ~a21~0 6) .cse2 .cse3) (and .cse7 .cse8 .cse0 .cse9 .cse2 .cse10) (and .cse0 (= 5 ~a15~0) (= ~a21~0 6)) (and .cse0 (<= (+ 397559 ~a12~0) 0) .cse4) (and .cse0 .cse1 .cse11 .cse12 .cse13) (and (<= ~a12~0 73282) .cse0 .cse9 .cse10 .cse14) (and .cse8 .cse0 .cse2 (not (<= .cse15 0))) (and .cse0 .cse12 .cse6 .cse13) (and .cse0 .cse14 .cse11 .cse13)))) [2021-12-22 09:27:14,224 INFO L858 garLoopResultBuilder]: For program point L551(lines 551 880) no Hoare annotation was computed. [2021-12-22 09:27:14,224 INFO L858 garLoopResultBuilder]: For program point L221(lines 221 880) no Hoare annotation was computed. [2021-12-22 09:27:14,224 INFO L858 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-12-22 09:27:14,224 INFO L858 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2021-12-22 09:27:14,224 INFO L858 garLoopResultBuilder]: For program point L684(lines 684 880) no Hoare annotation was computed. [2021-12-22 09:27:14,225 INFO L858 garLoopResultBuilder]: For program point L817(lines 817 880) no Hoare annotation was computed. [2021-12-22 09:27:14,225 INFO L858 garLoopResultBuilder]: For program point L751(lines 751 880) no Hoare annotation was computed. [2021-12-22 09:27:14,225 INFO L858 garLoopResultBuilder]: For program point L619(lines 619 880) no Hoare annotation was computed. [2021-12-22 09:27:14,225 INFO L858 garLoopResultBuilder]: For program point L157-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,225 INFO L858 garLoopResultBuilder]: For program point L91-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,225 INFO L861 garLoopResultBuilder]: At program point L884(lines 884 900) the Hoare annotation is: true [2021-12-22 09:27:14,225 INFO L858 garLoopResultBuilder]: For program point L488(lines 488 880) no Hoare annotation was computed. [2021-12-22 09:27:14,225 INFO L858 garLoopResultBuilder]: For program point L290(lines 290 880) no Hoare annotation was computed. [2021-12-22 09:27:14,225 INFO L858 garLoopResultBuilder]: For program point L158(line 158) no Hoare annotation was computed. [2021-12-22 09:27:14,225 INFO L858 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2021-12-22 09:27:14,226 INFO L858 garLoopResultBuilder]: For program point L687(lines 687 880) no Hoare annotation was computed. [2021-12-22 09:27:14,226 INFO L858 garLoopResultBuilder]: For program point L357(lines 357 880) no Hoare annotation was computed. [2021-12-22 09:27:14,226 INFO L858 garLoopResultBuilder]: For program point L424(lines 424 880) no Hoare annotation was computed. [2021-12-22 09:27:14,226 INFO L858 garLoopResultBuilder]: For program point L160-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,226 INFO L858 garLoopResultBuilder]: For program point L94-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,226 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-22 09:27:14,226 INFO L858 garLoopResultBuilder]: For program point L557(lines 557 880) no Hoare annotation was computed. [2021-12-22 09:27:14,226 INFO L858 garLoopResultBuilder]: For program point L227(lines 227 880) no Hoare annotation was computed. [2021-12-22 09:27:14,226 INFO L858 garLoopResultBuilder]: For program point L161(line 161) no Hoare annotation was computed. [2021-12-22 09:27:14,227 INFO L858 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-12-22 09:27:14,227 INFO L858 garLoopResultBuilder]: For program point L757(lines 757 880) no Hoare annotation was computed. [2021-12-22 09:27:14,227 INFO L858 garLoopResultBuilder]: For program point L625(lines 625 880) no Hoare annotation was computed. [2021-12-22 09:27:14,227 INFO L858 garLoopResultBuilder]: For program point L163-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,227 INFO L858 garLoopResultBuilder]: For program point L97-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,227 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-12-22 09:27:14,227 INFO L858 garLoopResultBuilder]: For program point L31-2(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,227 INFO L858 garLoopResultBuilder]: For program point L824(lines 824 880) no Hoare annotation was computed. [2021-12-22 09:27:14,227 INFO L854 garLoopResultBuilder]: At program point L890-2(lines 890 899) the Hoare annotation is: (let ((.cse15 (+ ~a12~0 43)) (.cse5 (= 7 ~a15~0))) (let ((.cse3 (<= (+ 49 ~a12~0) 0)) (.cse7 (<= 9 ~a21~0)) (.cse4 (= ~a21~0 10)) (.cse1 (<= 7 ~a21~0)) (.cse9 (<= ~a15~0 8)) (.cse10 (not .cse5)) (.cse8 (<= ~a21~0 9)) (.cse2 (<= ~a15~0 7)) (.cse12 (< 0 .cse15)) (.cse6 (<= ~a12~0 586307)) (.cse0 (= ~a24~0 1)) (.cse14 (<= 10 ~a21~0)) (.cse11 (<= ~a12~0 599999)) (.cse13 (<= 8 ~a15~0))) (or (and .cse0 .cse1 .cse2 (<= ~a21~0 7)) (and .cse0 (= 7 ~a21~0) .cse3 (= ~a15~0 8)) (and .cse0 (not (<= ~a12~0 80)) .cse4 .cse5) (and .cse0 (<= 8 ~a21~0) (<= ~a21~0 8) .cse6) (and .cse7 .cse8 .cse0 .cse9 .cse3) (and (<= ~a21~0 6) .cse2 .cse3) (and .cse7 .cse8 .cse0 .cse9 .cse2 .cse10) (and .cse0 (= 5 ~a15~0) (= ~a21~0 6)) (and .cse0 (<= (+ 397559 ~a12~0) 0) .cse4) (and .cse0 .cse1 .cse11 .cse12 .cse13) (and (<= ~a12~0 73282) .cse0 .cse9 .cse10 .cse14) (and .cse8 .cse0 .cse2 (not (<= .cse15 0))) (and .cse0 .cse12 .cse6 .cse13) (and .cse0 .cse14 .cse11 .cse13)))) [2021-12-22 09:27:14,228 INFO L858 garLoopResultBuilder]: For program point L494(lines 494 880) no Hoare annotation was computed. [2021-12-22 09:27:14,228 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 880) no Hoare annotation was computed. [2021-12-22 09:27:14,228 INFO L858 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2021-12-22 09:27:14,228 INFO L858 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2021-12-22 09:27:14,228 INFO L858 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-12-22 09:27:14,228 INFO L858 garLoopResultBuilder]: For program point L693(lines 693 880) no Hoare annotation was computed. [2021-12-22 09:27:14,229 INFO L858 garLoopResultBuilder]: For program point L363(lines 363 880) no Hoare annotation was computed. [2021-12-22 09:27:14,229 INFO L858 garLoopResultBuilder]: For program point L562(lines 562 880) no Hoare annotation was computed. [2021-12-22 09:27:14,229 INFO L858 garLoopResultBuilder]: For program point L430(lines 430 880) no Hoare annotation was computed. [2021-12-22 09:27:14,229 INFO L858 garLoopResultBuilder]: For program point L166-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,229 INFO L858 garLoopResultBuilder]: For program point L100-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,229 INFO L858 garLoopResultBuilder]: For program point L34-1(lines 30 882) no Hoare annotation was computed. [2021-12-22 09:27:14,229 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 880) no Hoare annotation was computed. [2021-12-22 09:27:14,229 INFO L858 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2021-12-22 09:27:14,229 INFO L858 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-12-22 09:27:14,229 INFO L858 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-12-22 09:27:14,232 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 09:27:14,233 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 09:27:14,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 09:27:14 BoogieIcfgContainer [2021-12-22 09:27:14,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 09:27:14,271 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 09:27:14,272 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 09:27:14,272 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 09:27:14,272 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:26:33" (3/4) ... [2021-12-22 09:27:14,274 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 09:27:14,291 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-12-22 09:27:14,307 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-22 09:27:14,308 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-22 09:27:14,308 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-22 09:27:14,483 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 09:27:14,483 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 09:27:14,484 INFO L158 Benchmark]: Toolchain (without parser) took 42870.42ms. Allocated memory was 107.0MB in the beginning and 755.0MB in the end (delta: 648.0MB). Free memory was 67.0MB in the beginning and 695.5MB in the end (delta: -628.5MB). Peak memory consumption was 458.4MB. Max. memory is 16.1GB. [2021-12-22 09:27:14,484 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 107.0MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 09:27:14,484 INFO L158 Benchmark]: CACSL2BoogieTranslator took 513.28ms. Allocated memory is still 107.0MB. Free memory was 66.8MB in the beginning and 61.4MB in the end (delta: 5.4MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2021-12-22 09:27:14,485 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.34ms. Allocated memory is still 107.0MB. Free memory was 61.4MB in the beginning and 51.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 09:27:14,485 INFO L158 Benchmark]: Boogie Preprocessor took 65.83ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 51.4MB in the beginning and 100.6MB in the end (delta: -49.2MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2021-12-22 09:27:14,486 INFO L158 Benchmark]: RCFGBuilder took 1001.74ms. Allocated memory is still 130.0MB. Free memory was 100.6MB in the beginning and 69.3MB in the end (delta: 31.3MB). Peak memory consumption was 52.1MB. Max. memory is 16.1GB. [2021-12-22 09:27:14,487 INFO L158 Benchmark]: TraceAbstraction took 40987.09ms. Allocated memory was 130.0MB in the beginning and 755.0MB in the end (delta: 625.0MB). Free memory was 69.3MB in the beginning and 264.5MB in the end (delta: -195.2MB). Peak memory consumption was 444.7MB. Max. memory is 16.1GB. [2021-12-22 09:27:14,487 INFO L158 Benchmark]: Witness Printer took 212.23ms. Allocated memory is still 755.0MB. Free memory was 264.5MB in the beginning and 695.5MB in the end (delta: -431.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 09:27:14,493 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 107.0MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 513.28ms. Allocated memory is still 107.0MB. Free memory was 66.8MB in the beginning and 61.4MB in the end (delta: 5.4MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.34ms. Allocated memory is still 107.0MB. Free memory was 61.4MB in the beginning and 51.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.83ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 51.4MB in the beginning and 100.6MB in the end (delta: -49.2MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1001.74ms. Allocated memory is still 130.0MB. Free memory was 100.6MB in the beginning and 69.3MB in the end (delta: 31.3MB). Peak memory consumption was 52.1MB. Max. memory is 16.1GB. * TraceAbstraction took 40987.09ms. Allocated memory was 130.0MB in the beginning and 755.0MB in the end (delta: 625.0MB). Free memory was 69.3MB in the beginning and 264.5MB in the end (delta: -195.2MB). Peak memory consumption was 444.7MB. Max. memory is 16.1GB. * Witness Printer took 212.23ms. Allocated memory is still 755.0MB. Free memory was 264.5MB in the beginning and 695.5MB in the end (delta: -431.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 161]: 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, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.9s, OverallIterations: 26, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.3s, AutomataDifference: 13.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2501 SdHoareTripleChecker+Valid, 11.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2501 mSDsluCounter, 2464 SdHoareTripleChecker+Invalid, 9.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 190 mSDsCounter, 1647 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15103 IncrementalHoareTripleChecker+Invalid, 16750 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1647 mSolverCounterUnsat, 2274 mSDtfsCounter, 15103 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9677 GetRequests, 9602 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6768occurred in iteration=17, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 26 MinimizatonAttempts, 5874 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 114 NumberOfFragments, 415 HoareAnnotationTreeSize, 3 FomulaSimplifications, 5272 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 3 FomulaSimplificationsInter, 17180 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 17.4s InterpolantComputationTime, 32484 NumberOfCodeBlocks, 32484 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 33233 ConstructedInterpolants, 0 QuantifiedInterpolants, 126136 SizeOfPredicates, 0 NumberOfNonLiveVariables, 10962 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 36 InterpolantComputations, 25 PerfectInterpolantSequences, 127061/129979 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: 30]: Loop Invariant Derived loop invariant: (((((((((((((((a24 == 1 && 7 <= a21) && a15 <= 7) && a21 <= 7) || (((a24 == 1 && 7 == a21) && 49 + a12 <= 0) && a15 == 8)) || (((a24 == 1 && !(a12 <= 80)) && a21 == 10) && 7 == a15)) || (((a24 == 1 && 8 <= a21) && a21 <= 8) && a12 <= 586307)) || ((((9 <= a21 && a21 <= 9) && a24 == 1) && a15 <= 8) && 49 + a12 <= 0)) || ((a21 <= 6 && a15 <= 7) && 49 + a12 <= 0)) || (((((9 <= a21 && a21 <= 9) && a24 == 1) && a15 <= 8) && a15 <= 7) && !(7 == a15))) || ((a24 == 1 && 5 == a15) && a21 == 6)) || ((a24 == 1 && 397559 + a12 <= 0) && a21 == 10)) || ((((a24 == 1 && 7 <= a21) && a12 <= 599999) && 0 < a12 + 43) && 8 <= a15)) || ((((a12 <= 73282 && a24 == 1) && a15 <= 8) && !(7 == a15)) && 10 <= a21)) || (((a21 <= 9 && a24 == 1) && a15 <= 7) && !(a12 + 43 <= 0))) || (((a24 == 1 && 0 < a12 + 43) && a12 <= 586307) && 8 <= a15)) || (((a24 == 1 && 10 <= a21) && a12 <= 599999) && 8 <= a15) - InvariantResult [Line: 884]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: (((((((((((((((a24 == 1 && 7 <= a21) && a15 <= 7) && a21 <= 7) || (((a24 == 1 && 7 == a21) && 49 + a12 <= 0) && a15 == 8)) || (((a24 == 1 && !(a12 <= 80)) && a21 == 10) && 7 == a15)) || (((a24 == 1 && 8 <= a21) && a21 <= 8) && a12 <= 586307)) || ((((9 <= a21 && a21 <= 9) && a24 == 1) && a15 <= 8) && 49 + a12 <= 0)) || ((a21 <= 6 && a15 <= 7) && 49 + a12 <= 0)) || (((((9 <= a21 && a21 <= 9) && a24 == 1) && a15 <= 8) && a15 <= 7) && !(7 == a15))) || ((a24 == 1 && 5 == a15) && a21 == 6)) || ((a24 == 1 && 397559 + a12 <= 0) && a21 == 10)) || ((((a24 == 1 && 7 <= a21) && a12 <= 599999) && 0 < a12 + 43) && 8 <= a15)) || ((((a12 <= 73282 && a24 == 1) && a15 <= 8) && !(7 == a15)) && 10 <= a21)) || (((a21 <= 9 && a24 == 1) && a15 <= 7) && !(a12 + 43 <= 0))) || (((a24 == 1 && 0 < a12 + 43) && a12 <= 586307) && 8 <= a15)) || (((a24 == 1 && 10 <= a21) && a12 <= 599999) && 8 <= a15) RESULT: Ultimate proved your program to be correct! [2021-12-22 09:27:14,533 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE