./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product43.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 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/product-lines/minepump_spec2_product43.cil.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 a285a3ca3b1510caf096d0e38f1e6e56ffc456f4 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-05 09:54:06,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 09:54:06,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 09:54:06,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 09:54:06,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 09:54:06,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 09:54:06,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 09:54:06,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 09:54:06,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 09:54:06,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 09:54:06,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 09:54:06,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 09:54:06,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 09:54:06,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 09:54:06,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 09:54:06,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 09:54:06,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 09:54:06,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 09:54:06,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 09:54:06,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 09:54:06,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 09:54:06,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 09:54:06,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 09:54:06,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 09:54:06,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 09:54:06,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 09:54:06,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 09:54:06,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 09:54:06,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 09:54:06,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 09:54:06,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 09:54:06,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 09:54:06,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 09:54:06,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 09:54:06,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 09:54:06,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 09:54:06,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 09:54:06,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 09:54:06,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 09:54:06,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 09:54:06,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 09:54:06,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-05 09:54:06,380 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 09:54:06,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 09:54:06,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 09:54:06,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 09:54:06,382 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 09:54:06,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 09:54:06,382 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 09:54:06,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-05 09:54:06,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 09:54:06,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 09:54:06,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 09:54:06,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 09:54:06,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 09:54:06,383 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 09:54:06,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 09:54:06,384 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 09:54:06,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 09:54:06,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 09:54:06,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 09:54:06,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 09:54:06,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 09:54:06,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 09:54:06,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 09:54:06,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 09:54:06,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-05 09:54:06,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-05 09:54:06,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 09:54:06,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 09:54:06,385 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a285a3ca3b1510caf096d0e38f1e6e56ffc456f4 [2021-07-05 09:54:06,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 09:54:06,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 09:54:06,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 09:54:06,668 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 09:54:06,677 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 09:54:06,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product43.cil.c [2021-07-05 09:54:06,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f4c9a3d/ca4d2f9bb5d54877aa18ef5c2c1266e2/FLAG6210e7a4f [2021-07-05 09:54:07,190 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 09:54:07,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product43.cil.c [2021-07-05 09:54:07,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f4c9a3d/ca4d2f9bb5d54877aa18ef5c2c1266e2/FLAG6210e7a4f [2021-07-05 09:54:07,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f4c9a3d/ca4d2f9bb5d54877aa18ef5c2c1266e2 [2021-07-05 09:54:07,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 09:54:07,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 09:54:07,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 09:54:07,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 09:54:07,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 09:54:07,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 09:54:07" (1/1) ... [2021-07-05 09:54:07,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bfa71c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:07, skipping insertion in model container [2021-07-05 09:54:07,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 09:54:07" (1/1) ... [2021-07-05 09:54:07,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 09:54:07,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 09:54:07,882 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product43.cil.c[18079,18092] [2021-07-05 09:54:07,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 09:54:07,904 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 09:54:07,990 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product43.cil.c[18079,18092] [2021-07-05 09:54:07,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 09:54:08,013 INFO L208 MainTranslator]: Completed translation [2021-07-05 09:54:08,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:08 WrapperNode [2021-07-05 09:54:08,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 09:54:08,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 09:54:08,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 09:54:08,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 09:54:08,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:08" (1/1) ... [2021-07-05 09:54:08,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:08" (1/1) ... [2021-07-05 09:54:08,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 09:54:08,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 09:54:08,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 09:54:08,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 09:54:08,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:08" (1/1) ... [2021-07-05 09:54:08,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:08" (1/1) ... [2021-07-05 09:54:08,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:08" (1/1) ... [2021-07-05 09:54:08,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:08" (1/1) ... [2021-07-05 09:54:08,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:08" (1/1) ... [2021-07-05 09:54:08,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:08" (1/1) ... [2021-07-05 09:54:08,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:08" (1/1) ... [2021-07-05 09:54:08,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 09:54:08,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 09:54:08,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 09:54:08,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 09:54:08,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:08" (1/1) ... [2021-07-05 09:54:08,147 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 09:54:08,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 09:54:08,162 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) [2021-07-05 09:54:08,193 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 [2021-07-05 09:54:08,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 09:54:08,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-05 09:54:08,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 09:54:08,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 09:54:08,845 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 09:54:08,845 INFO L299 CfgBuilder]: Removed 120 assume(true) statements. [2021-07-05 09:54:08,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 09:54:08 BoogieIcfgContainer [2021-07-05 09:54:08,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 09:54:08,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 09:54:08,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 09:54:08,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 09:54:08,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 09:54:07" (1/3) ... [2021-07-05 09:54:08,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cc7e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 09:54:08, skipping insertion in model container [2021-07-05 09:54:08,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:08" (2/3) ... [2021-07-05 09:54:08,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cc7e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 09:54:08, skipping insertion in model container [2021-07-05 09:54:08,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 09:54:08" (3/3) ... [2021-07-05 09:54:08,853 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product43.cil.c [2021-07-05 09:54:08,862 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 09:54:08,862 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-07-05 09:54:08,899 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 09:54:08,904 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 09:54:08,904 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 09:54:08,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 89 states have (on average 1.5617977528089888) internal successors, (139), 92 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:08,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-07-05 09:54:08,920 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 09:54:08,921 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 09:54:08,921 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 09:54:08,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 09:54:08,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1417220031, now seen corresponding path program 1 times [2021-07-05 09:54:08,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 09:54:08,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081915629] [2021-07-05 09:54:08,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 09:54:08,933 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 09:54:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 09:54:09,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:09,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:09,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 09:54:09,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 09:54:09,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081915629] [2021-07-05 09:54:09,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081915629] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 09:54:09,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 09:54:09,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-05 09:54:09,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042034641] [2021-07-05 09:54:09,218 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-05 09:54:09,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 09:54:09,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-05 09:54:09,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-05 09:54:09,231 INFO L87 Difference]: Start difference. First operand has 93 states, 89 states have (on average 1.5617977528089888) internal successors, (139), 92 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:09,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 09:54:09,305 INFO L93 Difference]: Finished difference Result 265 states and 401 transitions. [2021-07-05 09:54:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-05 09:54:09,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-07-05 09:54:09,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 09:54:09,314 INFO L225 Difference]: With dead ends: 265 [2021-07-05 09:54:09,315 INFO L226 Difference]: Without dead ends: 75 [2021-07-05 09:54:09,318 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-05 09:54:09,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-07-05 09:54:09,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2021-07-05 09:54:09,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4857142857142858) internal successors, (104), 70 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:09,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 104 transitions. [2021-07-05 09:54:09,346 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 104 transitions. Word has length 24 [2021-07-05 09:54:09,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 09:54:09,346 INFO L442 AbstractCegarLoop]: Abstraction has 71 states and 104 transitions. [2021-07-05 09:54:09,346 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:09,346 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 104 transitions. [2021-07-05 09:54:09,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-07-05 09:54:09,347 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 09:54:09,347 INFO L525 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] [2021-07-05 09:54:09,347 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-05 09:54:09,347 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 09:54:09,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 09:54:09,348 INFO L82 PathProgramCache]: Analyzing trace with hash -462384263, now seen corresponding path program 1 times [2021-07-05 09:54:09,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 09:54:09,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083702293] [2021-07-05 09:54:09,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 09:54:09,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 09:54:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 09:54:09,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:09,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:09,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 09:54:09,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 09:54:09,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083702293] [2021-07-05 09:54:09,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083702293] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 09:54:09,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 09:54:09,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-05 09:54:09,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181388024] [2021-07-05 09:54:09,388 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-05 09:54:09,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 09:54:09,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-05 09:54:09,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-05 09:54:09,389 INFO L87 Difference]: Start difference. First operand 71 states and 104 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:09,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 09:54:09,417 INFO L93 Difference]: Finished difference Result 178 states and 267 transitions. [2021-07-05 09:54:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-05 09:54:09,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-07-05 09:54:09,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 09:54:09,419 INFO L225 Difference]: With dead ends: 178 [2021-07-05 09:54:09,419 INFO L226 Difference]: Without dead ends: 114 [2021-07-05 09:54:09,419 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-05 09:54:09,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-07-05 09:54:09,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2021-07-05 09:54:09,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.4774774774774775) internal successors, (164), 111 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:09,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 164 transitions. [2021-07-05 09:54:09,428 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 164 transitions. Word has length 25 [2021-07-05 09:54:09,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 09:54:09,429 INFO L442 AbstractCegarLoop]: Abstraction has 112 states and 164 transitions. [2021-07-05 09:54:09,429 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:09,429 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 164 transitions. [2021-07-05 09:54:09,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-07-05 09:54:09,429 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 09:54:09,430 INFO L525 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] [2021-07-05 09:54:09,430 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-05 09:54:09,430 INFO L374 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 09:54:09,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 09:54:09,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1738728008, now seen corresponding path program 1 times [2021-07-05 09:54:09,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 09:54:09,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978143493] [2021-07-05 09:54:09,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 09:54:09,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 09:54:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 09:54:09,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:09,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:09,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:09,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 09:54:09,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 09:54:09,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978143493] [2021-07-05 09:54:09,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978143493] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 09:54:09,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 09:54:09,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-05 09:54:09,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896748543] [2021-07-05 09:54:09,479 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-05 09:54:09,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 09:54:09,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-05 09:54:09,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-05 09:54:09,480 INFO L87 Difference]: Start difference. First operand 112 states and 164 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:09,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 09:54:09,556 INFO L93 Difference]: Finished difference Result 544 states and 809 transitions. [2021-07-05 09:54:09,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-05 09:54:09,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-07-05 09:54:09,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 09:54:09,559 INFO L225 Difference]: With dead ends: 544 [2021-07-05 09:54:09,559 INFO L226 Difference]: Without dead ends: 439 [2021-07-05 09:54:09,560 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 30.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-07-05 09:54:09,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-07-05 09:54:09,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 203. [2021-07-05 09:54:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.4455445544554455) internal successors, (292), 202 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 292 transitions. [2021-07-05 09:54:09,574 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 292 transitions. Word has length 27 [2021-07-05 09:54:09,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 09:54:09,574 INFO L442 AbstractCegarLoop]: Abstraction has 203 states and 292 transitions. [2021-07-05 09:54:09,574 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:09,574 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 292 transitions. [2021-07-05 09:54:09,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-07-05 09:54:09,575 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 09:54:09,575 INFO L525 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] [2021-07-05 09:54:09,575 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-05 09:54:09,576 INFO L374 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 09:54:09,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 09:54:09,576 INFO L82 PathProgramCache]: Analyzing trace with hash 304582848, now seen corresponding path program 1 times [2021-07-05 09:54:09,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 09:54:09,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840159860] [2021-07-05 09:54:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 09:54:09,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 09:54:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 09:54:09,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:09,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:09,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:09,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 09:54:09,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 09:54:09,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840159860] [2021-07-05 09:54:09,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840159860] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 09:54:09,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 09:54:09,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-05 09:54:09,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779770996] [2021-07-05 09:54:09,626 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-05 09:54:09,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 09:54:09,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-05 09:54:09,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-05 09:54:09,626 INFO L87 Difference]: Start difference. First operand 203 states and 292 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:09,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 09:54:09,704 INFO L93 Difference]: Finished difference Result 769 states and 1111 transitions. [2021-07-05 09:54:09,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-05 09:54:09,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-07-05 09:54:09,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 09:54:09,707 INFO L225 Difference]: With dead ends: 769 [2021-07-05 09:54:09,707 INFO L226 Difference]: Without dead ends: 573 [2021-07-05 09:54:09,708 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 26.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-07-05 09:54:09,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-07-05 09:54:09,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 201. [2021-07-05 09:54:09,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.43) internal successors, (286), 200 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:09,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 286 transitions. [2021-07-05 09:54:09,719 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 286 transitions. Word has length 28 [2021-07-05 09:54:09,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 09:54:09,719 INFO L442 AbstractCegarLoop]: Abstraction has 201 states and 286 transitions. [2021-07-05 09:54:09,720 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:09,720 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 286 transitions. [2021-07-05 09:54:09,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-07-05 09:54:09,721 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 09:54:09,721 INFO L525 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] [2021-07-05 09:54:09,721 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-05 09:54:09,721 INFO L374 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 09:54:09,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 09:54:09,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1643402821, now seen corresponding path program 1 times [2021-07-05 09:54:09,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 09:54:09,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871324635] [2021-07-05 09:54:09,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 09:54:09,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 09:54:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 09:54:09,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:09,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:09,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:09,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:09,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 09:54:09,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 09:54:09,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871324635] [2021-07-05 09:54:09,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871324635] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 09:54:09,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 09:54:09,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-05 09:54:09,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936295550] [2021-07-05 09:54:09,768 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-05 09:54:09,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 09:54:09,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-05 09:54:09,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-05 09:54:09,769 INFO L87 Difference]: Start difference. First operand 201 states and 286 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:09,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 09:54:09,804 INFO L93 Difference]: Finished difference Result 555 states and 781 transitions. [2021-07-05 09:54:09,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-05 09:54:09,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-07-05 09:54:09,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 09:54:09,806 INFO L225 Difference]: With dead ends: 555 [2021-07-05 09:54:09,806 INFO L226 Difference]: Without dead ends: 361 [2021-07-05 09:54:09,806 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-05 09:54:09,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-07-05 09:54:09,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 213. [2021-07-05 09:54:09,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.4056603773584906) internal successors, (298), 212 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:09,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 298 transitions. [2021-07-05 09:54:09,815 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 298 transitions. Word has length 35 [2021-07-05 09:54:09,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 09:54:09,816 INFO L442 AbstractCegarLoop]: Abstraction has 213 states and 298 transitions. [2021-07-05 09:54:09,816 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:09,816 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 298 transitions. [2021-07-05 09:54:09,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-07-05 09:54:09,817 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 09:54:09,817 INFO L525 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] [2021-07-05 09:54:09,817 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-05 09:54:09,817 INFO L374 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 09:54:09,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 09:54:09,817 INFO L82 PathProgramCache]: Analyzing trace with hash 632285571, now seen corresponding path program 1 times [2021-07-05 09:54:09,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 09:54:09,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535623816] [2021-07-05 09:54:09,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 09:54:09,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 09:54:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 09:54:09,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:09,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:09,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 09:54:09,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 09:54:09,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 09:54:09,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 09:54:09,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535623816] [2021-07-05 09:54:09,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535623816] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 09:54:09,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 09:54:09,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-05 09:54:09,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565074763] [2021-07-05 09:54:09,855 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-05 09:54:09,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 09:54:09,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-05 09:54:09,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-05 09:54:09,855 INFO L87 Difference]: Start difference. First operand 213 states and 298 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:09,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 09:54:09,926 INFO L93 Difference]: Finished difference Result 607 states and 834 transitions. [2021-07-05 09:54:09,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-05 09:54:09,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-07-05 09:54:09,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 09:54:09,928 INFO L225 Difference]: With dead ends: 607 [2021-07-05 09:54:09,928 INFO L226 Difference]: Without dead ends: 401 [2021-07-05 09:54:09,929 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 28.4ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-07-05 09:54:09,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-07-05 09:54:09,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 221. [2021-07-05 09:54:09,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.3909090909090909) internal successors, (306), 220 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) [2021-07-05 09:54:09,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 306 transitions. [2021-07-05 09:54:09,938 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 306 transitions. Word has length 35 [2021-07-05 09:54:09,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 09:54:09,939 INFO L442 AbstractCegarLoop]: Abstraction has 221 states and 306 transitions. [2021-07-05 09:54:09,939 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:09,939 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 306 transitions. [2021-07-05 09:54:09,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-07-05 09:54:09,940 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 09:54:09,940 INFO L525 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] [2021-07-05 09:54:09,940 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-05 09:54:09,940 INFO L374 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 09:54:09,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 09:54:09,940 INFO L82 PathProgramCache]: Analyzing trace with hash -388782783, now seen corresponding path program 1 times [2021-07-05 09:54:09,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 09:54:09,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611083783] [2021-07-05 09:54:09,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 09:54:09,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 09:54:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 09:54:09,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 09:54:09,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:09,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 09:54:09,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 09:54:09,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611083783] [2021-07-05 09:54:09,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611083783] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 09:54:09,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 09:54:09,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-05 09:54:09,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661909981] [2021-07-05 09:54:09,966 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-05 09:54:09,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 09:54:09,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-05 09:54:09,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-05 09:54:09,967 INFO L87 Difference]: Start difference. First operand 221 states and 306 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:10,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 09:54:10,005 INFO L93 Difference]: Finished difference Result 535 states and 735 transitions. [2021-07-05 09:54:10,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-05 09:54:10,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-07-05 09:54:10,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 09:54:10,006 INFO L225 Difference]: With dead ends: 535 [2021-07-05 09:54:10,006 INFO L226 Difference]: Without dead ends: 321 [2021-07-05 09:54:10,007 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-05 09:54:10,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-07-05 09:54:10,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2021-07-05 09:54:10,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.3375) internal successors, (428), 320 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:10,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 428 transitions. [2021-07-05 09:54:10,021 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 428 transitions. Word has length 35 [2021-07-05 09:54:10,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 09:54:10,021 INFO L442 AbstractCegarLoop]: Abstraction has 321 states and 428 transitions. [2021-07-05 09:54:10,021 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:10,021 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 428 transitions. [2021-07-05 09:54:10,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-05 09:54:10,022 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 09:54:10,022 INFO L525 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] [2021-07-05 09:54:10,022 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-05 09:54:10,022 INFO L374 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 09:54:10,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 09:54:10,023 INFO L82 PathProgramCache]: Analyzing trace with hash -713441279, now seen corresponding path program 1 times [2021-07-05 09:54:10,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 09:54:10,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004030535] [2021-07-05 09:54:10,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 09:54:10,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 09:54:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 09:54:10,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:10,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:10,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:10,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:10,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:10,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:10,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 09:54:10,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 09:54:10,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004030535] [2021-07-05 09:54:10,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004030535] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 09:54:10,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 09:54:10,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-05 09:54:10,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215959293] [2021-07-05 09:54:10,050 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-05 09:54:10,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 09:54:10,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-05 09:54:10,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-05 09:54:10,051 INFO L87 Difference]: Start difference. First operand 321 states and 428 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:10,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 09:54:10,096 INFO L93 Difference]: Finished difference Result 471 states and 635 transitions. [2021-07-05 09:54:10,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-05 09:54:10,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-07-05 09:54:10,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 09:54:10,100 INFO L225 Difference]: With dead ends: 471 [2021-07-05 09:54:10,100 INFO L226 Difference]: Without dead ends: 469 [2021-07-05 09:54:10,100 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-05 09:54:10,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-07-05 09:54:10,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 388. [2021-07-05 09:54:10,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 1.3643410852713178) internal successors, (528), 387 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:10,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 528 transitions. [2021-07-05 09:54:10,124 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 528 transitions. Word has length 36 [2021-07-05 09:54:10,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 09:54:10,124 INFO L442 AbstractCegarLoop]: Abstraction has 388 states and 528 transitions. [2021-07-05 09:54:10,124 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:10,124 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 528 transitions. [2021-07-05 09:54:10,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-05 09:54:10,125 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 09:54:10,125 INFO L525 BasicCegarLoop]: trace histogram [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] [2021-07-05 09:54:10,125 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-05 09:54:10,125 INFO L374 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 09:54:10,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 09:54:10,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1711605578, now seen corresponding path program 1 times [2021-07-05 09:54:10,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 09:54:10,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701483812] [2021-07-05 09:54:10,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 09:54:10,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 09:54:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 09:54:10,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:10,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:10,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:10,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:10,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:10,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:10,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:10,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:10,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:10,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:10,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:10,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:10,175 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-05 09:54:10,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 09:54:10,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701483812] [2021-07-05 09:54:10,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701483812] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 09:54:10,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 09:54:10,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-05 09:54:10,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892844531] [2021-07-05 09:54:10,177 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-05 09:54:10,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 09:54:10,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-05 09:54:10,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-05 09:54:10,178 INFO L87 Difference]: Start difference. First operand 388 states and 528 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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) [2021-07-05 09:54:10,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 09:54:10,332 INFO L93 Difference]: Finished difference Result 1131 states and 1527 transitions. [2021-07-05 09:54:10,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-05 09:54:10,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 54 [2021-07-05 09:54:10,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 09:54:10,334 INFO L225 Difference]: With dead ends: 1131 [2021-07-05 09:54:10,334 INFO L226 Difference]: Without dead ends: 750 [2021-07-05 09:54:10,335 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 48.3ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-07-05 09:54:10,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-07-05 09:54:10,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 361. [2021-07-05 09:54:10,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.336111111111111) internal successors, (481), 360 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 481 transitions. [2021-07-05 09:54:10,357 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 481 transitions. Word has length 54 [2021-07-05 09:54:10,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 09:54:10,359 INFO L442 AbstractCegarLoop]: Abstraction has 361 states and 481 transitions. [2021-07-05 09:54:10,360 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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) [2021-07-05 09:54:10,360 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 481 transitions. [2021-07-05 09:54:10,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-07-05 09:54:10,360 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 09:54:10,361 INFO L525 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 09:54:10,361 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-05 09:54:10,361 INFO L374 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 09:54:10,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 09:54:10,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1134302103, now seen corresponding path program 1 times [2021-07-05 09:54:10,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 09:54:10,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144211539] [2021-07-05 09:54:10,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 09:54:10,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 09:54:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-05 09:54:10,406 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-05 09:54:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-05 09:54:10,444 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-05 09:54:10,490 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-05 09:54:10,491 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-05 09:54:10,493 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-05 09:54:10,493 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 09:54:10,496 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION was UNSAFE (1/3) [2021-07-05 09:54:10,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.07 09:54:10 BoogieIcfgContainer [2021-07-05 09:54:10,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-05 09:54:10,623 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-05 09:54:10,623 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-05 09:54:10,623 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-05 09:54:10,624 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 09:54:08" (3/4) ... [2021-07-05 09:54:10,625 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-05 09:54:10,702 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-05 09:54:10,702 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-05 09:54:10,703 INFO L168 Benchmark]: Toolchain (without parser) took 3120.59 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 30.9 MB in the beginning and 59.5 MB in the end (delta: -28.6 MB). Peak memory consumption was 36.3 MB. Max. memory is 16.1 GB. [2021-07-05 09:54:10,703 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 36.4 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 09:54:10,703 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.96 ms. Allocated memory is still 54.5 MB. Free memory was 30.8 MB in the beginning and 27.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-07-05 09:54:10,704 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.88 ms. Allocated memory is still 54.5 MB. Free memory was 27.0 MB in the beginning and 23.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-05 09:54:10,704 INFO L168 Benchmark]: Boogie Preprocessor took 45.62 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 23.8 MB in the beginning and 51.5 MB in the end (delta: -27.7 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-07-05 09:54:10,704 INFO L168 Benchmark]: RCFGBuilder took 705.78 ms. Allocated memory is still 69.2 MB. Free memory was 51.5 MB in the beginning and 39.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. [2021-07-05 09:54:10,704 INFO L168 Benchmark]: TraceAbstraction took 1774.62 ms. Allocated memory was 69.2 MB in the beginning and 119.5 MB in the end (delta: 50.3 MB). Free memory was 39.2 MB in the beginning and 86.8 MB in the end (delta: -47.6 MB). Peak memory consumption was 62.3 MB. Max. memory is 16.1 GB. [2021-07-05 09:54:10,704 INFO L168 Benchmark]: Witness Printer took 78.96 ms. Allocated memory is still 119.5 MB. Free memory was 86.8 MB in the beginning and 59.5 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-07-05 09:54:10,705 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 36.4 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 429.96 ms. Allocated memory is still 54.5 MB. Free memory was 30.8 MB in the beginning and 27.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.88 ms. Allocated memory is still 54.5 MB. Free memory was 27.0 MB in the beginning and 23.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.62 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 23.8 MB in the beginning and 51.5 MB in the end (delta: -27.7 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * RCFGBuilder took 705.78 ms. Allocated memory is still 69.2 MB. Free memory was 51.5 MB in the beginning and 39.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1774.62 ms. Allocated memory was 69.2 MB in the beginning and 119.5 MB in the end (delta: 50.3 MB). Free memory was 39.2 MB in the beginning and 86.8 MB in the end (delta: -47.6 MB). Peak memory consumption was 62.3 MB. Max. memory is 16.1 GB. * Witness Printer took 78.96 ms. Allocated memory is still 119.5 MB. Free memory was 86.8 MB in the beginning and 59.5 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 948]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L312] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L509] int cleanupTimeShifts = 4; [L650] int methAndRunningLastTime ; [L759] int pumpRunning = 0; [L760] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L590] int retValue_acc ; [L591] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L639] int retValue_acc ; [L642] retValue_acc = 1 [L643] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L597] tmp = valid_product() [L599] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L655] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L691] int splverifierCounter ; [L692] int tmp ; [L693] int tmp___0 ; [L694] int tmp___1 ; [L695] int tmp___2 ; [L698] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L700] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L702] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L708] tmp = __VERIFIER_nondet_int() [L710] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L718] tmp___0 = __VERIFIER_nondet_int() [L720] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L728] tmp___2 = __VERIFIER_nondet_int() [L730] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L766] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L773] COND TRUE \read(systemActive) [L795] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L798] COND TRUE ! pumpRunning [L910] int retValue_acc ; [L911] int tmp ; [L912] int tmp___0 ; [L129] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L132] COND FALSE !(waterLevel < 2) [L136] retValue_acc = 0 [L137] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L916] tmp = isHighWaterSensorDry() [L918] COND FALSE !(\read(tmp)) [L921] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L923] retValue_acc = tmp___0 [L924] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L800] tmp = isHighWaterLevel() [L802] COND TRUE \read(tmp) [L829] int tmp ; [L854] int retValue_acc ; [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L858] retValue_acc = isMethaneLevelCritical() [L860] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L833] tmp = isMethaneAlarm() [L835] COND FALSE !(\read(tmp)) [L823] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L660] int tmp ; [L661] int tmp___0 ; [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L665] tmp = isMethaneLevelCritical() [L667] COND FALSE !(\read(tmp)) [L683] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L700] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L702] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L708] tmp = __VERIFIER_nondet_int() [L710] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L718] tmp___0 = __VERIFIER_nondet_int() [L720] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L79] COND FALSE !(\read(methaneLevelCritical)) [L82] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L728] tmp___2 = __VERIFIER_nondet_int() [L730] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L766] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L55] COND TRUE waterLevel > 0 [L56] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L773] COND TRUE \read(systemActive) [L795] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L798] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L660] int tmp ; [L661] int tmp___0 ; [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L665] tmp = isMethaneLevelCritical() [L667] COND TRUE \read(tmp) [L865] int retValue_acc ; [L868] retValue_acc = pumpRunning [L869] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L669] tmp___0 = isPumpRunning() [L671] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L672] COND FALSE !(\read(methAndRunningLastTime)) [L677] methAndRunningLastTime = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L700] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L702] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L708] tmp = __VERIFIER_nondet_int() [L710] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L718] tmp___0 = __VERIFIER_nondet_int() [L720] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L728] tmp___2 = __VERIFIER_nondet_int() [L730] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L766] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L55] COND TRUE waterLevel > 0 [L56] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L773] COND TRUE \read(systemActive) [L795] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L798] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L660] int tmp ; [L661] int tmp___0 ; [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L665] tmp = isMethaneLevelCritical() [L667] COND TRUE \read(tmp) [L865] int retValue_acc ; [L868] retValue_acc = pumpRunning [L869] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L669] tmp___0 = isPumpRunning() [L671] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L672] COND TRUE \read(methAndRunningLastTime) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L948] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION CFG has 1 procedures, 93 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1598.1ms, OverallIterations: 10, TraceHistogramMax: 3, EmptinessCheckTime: 13.8ms, AutomataDifference: 653.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 795 SDtfs, 1240 SDslu, 1637 SDs, 0 SdLazy, 197 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 181.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 174.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=388occurred in iteration=8, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 130.8ms AutomataMinimizationTime, 9 MinimizatonAttempts, 1412 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.9ms SsaConstructionTime, 238.3ms SatisfiabilityAnalysisTime, 297.5ms InterpolantComputationTime, 368 NumberOfCodeBlocks, 368 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 290 ConstructedInterpolants, 0 QuantifiedInterpolants, 620 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 17/17 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 RESULT: Ultimate proved your program to be incorrect! [2021-07-05 09:54:10,731 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...