./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product36.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_product36.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 de1d9a043543a6ff316ba93a02e2ab847e173d5e ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:54:02,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 09:54:02,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 09:54:02,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 09:54:02,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 09:54:02,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 09:54:02,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 09:54:02,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 09:54:02,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 09:54:02,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 09:54:02,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 09:54:02,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 09:54:02,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 09:54:02,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 09:54:02,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 09:54:02,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 09:54:02,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 09:54:02,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 09:54:02,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 09:54:02,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 09:54:02,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 09:54:02,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 09:54:02,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 09:54:02,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 09:54:02,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 09:54:02,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 09:54:02,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 09:54:02,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 09:54:02,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 09:54:02,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 09:54:02,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 09:54:02,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 09:54:02,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 09:54:02,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 09:54:02,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 09:54:02,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 09:54:02,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 09:54:02,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 09:54:02,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 09:54:02,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 09:54:02,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 09:54:02,489 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-05 09:54:02,522 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 09:54:02,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 09:54:02,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 09:54:02,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 09:54:02,526 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 09:54:02,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 09:54:02,526 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 09:54:02,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-05 09:54:02,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 09:54:02,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 09:54:02,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 09:54:02,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 09:54:02,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 09:54:02,528 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 09:54:02,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 09:54:02,529 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 09:54:02,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 09:54:02,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 09:54:02,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 09:54:02,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 09:54:02,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 09:54:02,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 09:54:02,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 09:54:02,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 09:54:02,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-05 09:54:02,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-05 09:54:02,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 09:54:02,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 09:54:02,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de1d9a043543a6ff316ba93a02e2ab847e173d5e [2021-07-05 09:54:02,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 09:54:02,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 09:54:02,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 09:54:02,897 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 09:54:02,897 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 09:54:02,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2021-07-05 09:54:02,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e328d7ab9/e5e153d721454ecd85ea8cb0ca7d0fac/FLAG04d9674df [2021-07-05 09:54:03,362 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 09:54:03,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2021-07-05 09:54:03,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e328d7ab9/e5e153d721454ecd85ea8cb0ca7d0fac/FLAG04d9674df [2021-07-05 09:54:03,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e328d7ab9/e5e153d721454ecd85ea8cb0ca7d0fac [2021-07-05 09:54:03,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 09:54:03,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 09:54:03,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 09:54:03,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 09:54:03,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 09:54:03,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 09:54:03" (1/1) ... [2021-07-05 09:54:03,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6099f8e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:03, skipping insertion in model container [2021-07-05 09:54:03,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 09:54:03" (1/1) ... [2021-07-05 09:54:03,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 09:54:03,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 09:54:03,697 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_product36.cil.c[17352,17365] [2021-07-05 09:54:03,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 09:54:03,714 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 09:54:03,793 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_product36.cil.c[17352,17365] [2021-07-05 09:54:03,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 09:54:03,821 INFO L208 MainTranslator]: Completed translation [2021-07-05 09:54:03,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:03 WrapperNode [2021-07-05 09:54:03,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 09:54:03,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 09:54:03,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 09:54:03,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 09:54:03,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:03" (1/1) ... [2021-07-05 09:54:03,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:03" (1/1) ... [2021-07-05 09:54:03,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 09:54:03,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 09:54:03,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 09:54:03,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 09:54:03,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:03" (1/1) ... [2021-07-05 09:54:03,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:03" (1/1) ... [2021-07-05 09:54:03,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:03" (1/1) ... [2021-07-05 09:54:03,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:03" (1/1) ... [2021-07-05 09:54:03,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:03" (1/1) ... [2021-07-05 09:54:03,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:03" (1/1) ... [2021-07-05 09:54:03,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:03" (1/1) ... [2021-07-05 09:54:03,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 09:54:03,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 09:54:03,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 09:54:03,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 09:54:03,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:03" (1/1) ... [2021-07-05 09:54:03,927 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 09:54:03,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 09:54:03,998 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 09:54:04,001 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 09:54:04,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 09:54:04,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-05 09:54:04,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 09:54:04,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 09:54:04,859 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 09:54:04,859 INFO L299 CfgBuilder]: Removed 104 assume(true) statements. [2021-07-05 09:54:04,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 09:54:04 BoogieIcfgContainer [2021-07-05 09:54:04,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 09:54:04,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 09:54:04,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 09:54:04,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 09:54:04,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 09:54:03" (1/3) ... [2021-07-05 09:54:04,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104ce98a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 09:54:04, skipping insertion in model container [2021-07-05 09:54:04,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 09:54:03" (2/3) ... [2021-07-05 09:54:04,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104ce98a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 09:54:04, skipping insertion in model container [2021-07-05 09:54:04,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 09:54:04" (3/3) ... [2021-07-05 09:54:04,870 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2021-07-05 09:54:04,877 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 09:54:04,878 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-07-05 09:54:04,934 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 09:54:04,947 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 09:54:04,948 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 09:54:04,965 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 09:54:04,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-07-05 09:54:04,972 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 09:54:04,973 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 09:54:04,973 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 09:54:04,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 09:54:04,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1219405376, now seen corresponding path program 1 times [2021-07-05 09:54:04,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 09:54:04,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354669753] [2021-07-05 09:54:04,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 09:54:04,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 09:54:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 09:54:05,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:05,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:05,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:05,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:05,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:05,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:05,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:05,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:05,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:05,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 09:54:05,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:05,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:05,329 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 09:54:05,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 09:54:05,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354669753] [2021-07-05 09:54:05,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354669753] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 09:54:05,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 09:54:05,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-05 09:54:05,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783788065] [2021-07-05 09:54:05,345 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-05 09:54:05,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 09:54:05,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-05 09:54:05,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-05 09:54:05,362 INFO L87 Difference]: Start difference. First operand has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 states have internal predecessors, (127), 0 states have call successors, (0), 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 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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 09:54:05,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 09:54:05,497 INFO L93 Difference]: Finished difference Result 217 states and 332 transitions. [2021-07-05 09:54:05,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-05 09:54:05,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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 09:54:05,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 09:54:05,508 INFO L225 Difference]: With dead ends: 217 [2021-07-05 09:54:05,509 INFO L226 Difference]: Without dead ends: 62 [2021-07-05 09:54:05,512 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 41.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-05 09:54:05,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-07-05 09:54:05,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2021-07-05 09:54:05,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 57 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 09:54:05,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 85 transitions. [2021-07-05 09:54:05,546 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 85 transitions. Word has length 24 [2021-07-05 09:54:05,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 09:54:05,547 INFO L442 AbstractCegarLoop]: Abstraction has 58 states and 85 transitions. [2021-07-05 09:54:05,547 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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 09:54:05,547 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 85 transitions. [2021-07-05 09:54:05,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-07-05 09:54:05,548 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 09:54:05,548 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 09:54:05,549 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-05 09:54:05,549 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 09:54:05,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 09:54:05,550 INFO L82 PathProgramCache]: Analyzing trace with hash 999444121, now seen corresponding path program 1 times [2021-07-05 09:54:05,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 09:54:05,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120121250] [2021-07-05 09:54:05,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 09:54:05,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 09:54:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 09:54:05,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:05,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:05,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:05,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:05,617 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 09:54:05,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 09:54:05,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120121250] [2021-07-05 09:54:05,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120121250] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 09:54:05,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 09:54:05,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-05 09:54:05,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331252890] [2021-07-05 09:54:05,622 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-05 09:54:05,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 09:54:05,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-05 09:54:05,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-05 09:54:05,624 INFO L87 Difference]: Start difference. First operand 58 states and 85 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 09:54:05,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 09:54:05,657 INFO L93 Difference]: Finished difference Result 131 states and 195 transitions. [2021-07-05 09:54:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-05 09:54:05,658 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 09:54:05,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 09:54:05,660 INFO L225 Difference]: With dead ends: 131 [2021-07-05 09:54:05,661 INFO L226 Difference]: Without dead ends: 80 [2021-07-05 09:54:05,662 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-05 09:54:05,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-07-05 09:54:05,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-07-05 09:54:05,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.4545454545454546) internal successors, (112), 77 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 09:54:05,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 112 transitions. [2021-07-05 09:54:05,681 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 112 transitions. Word has length 25 [2021-07-05 09:54:05,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 09:54:05,682 INFO L442 AbstractCegarLoop]: Abstraction has 78 states and 112 transitions. [2021-07-05 09:54:05,682 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 09:54:05,682 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 112 transitions. [2021-07-05 09:54:05,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-07-05 09:54:05,684 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 09:54:05,684 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 09:54:05,686 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-05 09:54:05,687 INFO L374 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 09:54:05,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 09:54:05,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1239284745, now seen corresponding path program 1 times [2021-07-05 09:54:05,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 09:54:05,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602918998] [2021-07-05 09:54:05,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 09:54:05,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 09:54:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 09:54:05,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:05,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:05,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:05,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:05,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:05,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:05,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:05,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:05,759 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 09:54:05,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 09:54:05,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602918998] [2021-07-05 09:54:05,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602918998] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 09:54:05,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 09:54:05,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-05 09:54:05,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443121482] [2021-07-05 09:54:05,761 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-05 09:54:05,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 09:54:05,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-05 09:54:05,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-05 09:54:05,762 INFO L87 Difference]: Start difference. First operand 78 states and 112 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 09:54:05,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 09:54:05,821 INFO L93 Difference]: Finished difference Result 361 states and 530 transitions. [2021-07-05 09:54:05,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-05 09:54:05,821 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 09:54:05,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 09:54:05,823 INFO L225 Difference]: With dead ends: 361 [2021-07-05 09:54:05,823 INFO L226 Difference]: Without dead ends: 290 [2021-07-05 09:54:05,824 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 30.9ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-07-05 09:54:05,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-07-05 09:54:05,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 138. [2021-07-05 09:54:05,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.4233576642335766) internal successors, (195), 137 states have internal predecessors, (195), 0 states have call successors, (0), 0 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 09:54:05,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 195 transitions. [2021-07-05 09:54:05,839 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 195 transitions. Word has length 27 [2021-07-05 09:54:05,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 09:54:05,839 INFO L442 AbstractCegarLoop]: Abstraction has 138 states and 195 transitions. [2021-07-05 09:54:05,840 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 09:54:05,840 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 195 transitions. [2021-07-05 09:54:05,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-07-05 09:54:05,841 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 09:54:05,841 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 09:54:05,841 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-05 09:54:05,841 INFO L374 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 09:54:05,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 09:54:05,842 INFO L82 PathProgramCache]: Analyzing trace with hash -194860415, now seen corresponding path program 1 times [2021-07-05 09:54:05,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 09:54:05,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239837999] [2021-07-05 09:54:05,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 09:54:05,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 09:54:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 09:54:05,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:05,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:05,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:05,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:05,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:05,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:05,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:05,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:05,890 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 09:54:05,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 09:54:05,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239837999] [2021-07-05 09:54:05,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239837999] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 09:54:05,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 09:54:05,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-05 09:54:05,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557987114] [2021-07-05 09:54:05,892 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-05 09:54:05,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 09:54:05,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-05 09:54:05,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-05 09:54:05,894 INFO L87 Difference]: Start difference. First operand 138 states and 195 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 09:54:06,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 09:54:06,004 INFO L93 Difference]: Finished difference Result 499 states and 711 transitions. [2021-07-05 09:54:06,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-05 09:54:06,005 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 09:54:06,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 09:54:06,006 INFO L225 Difference]: With dead ends: 499 [2021-07-05 09:54:06,006 INFO L226 Difference]: Without dead ends: 368 [2021-07-05 09:54:06,010 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 33.2ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-07-05 09:54:06,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-07-05 09:54:06,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 136. [2021-07-05 09:54:06,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.4) internal successors, (189), 135 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 09:54:06,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 189 transitions. [2021-07-05 09:54:06,032 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 189 transitions. Word has length 28 [2021-07-05 09:54:06,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 09:54:06,032 INFO L442 AbstractCegarLoop]: Abstraction has 136 states and 189 transitions. [2021-07-05 09:54:06,033 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 09:54:06,033 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 189 transitions. [2021-07-05 09:54:06,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-05 09:54:06,036 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 09:54:06,036 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] [2021-07-05 09:54:06,036 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-05 09:54:06,036 INFO L374 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 09:54:06,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 09:54:06,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1409937664, now seen corresponding path program 1 times [2021-07-05 09:54:06,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 09:54:06,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830736244] [2021-07-05 09:54:06,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 09:54:06,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 09:54:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 09:54:06,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:06,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:06,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:06,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:06,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:06,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:06,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:06,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:06,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:06,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:06,123 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 09:54:06,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 09:54:06,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830736244] [2021-07-05 09:54:06,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830736244] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 09:54:06,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 09:54:06,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-05 09:54:06,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361053524] [2021-07-05 09:54:06,128 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-05 09:54:06,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 09:54:06,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-05 09:54:06,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-05 09:54:06,132 INFO L87 Difference]: Start difference. First operand 136 states and 189 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:06,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 09:54:06,185 INFO L93 Difference]: Finished difference Result 401 states and 556 transitions. [2021-07-05 09:54:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-05 09:54:06,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-05 09:54:06,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 09:54:06,187 INFO L225 Difference]: With dead ends: 401 [2021-07-05 09:54:06,187 INFO L226 Difference]: Without dead ends: 272 [2021-07-05 09:54:06,188 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-07-05 09:54:06,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-07-05 09:54:06,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 142. [2021-07-05 09:54:06,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.3829787234042554) internal successors, (195), 141 states have internal predecessors, (195), 0 states have call successors, (0), 0 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 09:54:06,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 195 transitions. [2021-07-05 09:54:06,214 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 195 transitions. Word has length 32 [2021-07-05 09:54:06,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 09:54:06,215 INFO L442 AbstractCegarLoop]: Abstraction has 142 states and 195 transitions. [2021-07-05 09:54:06,215 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:06,215 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 195 transitions. [2021-07-05 09:54:06,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-05 09:54:06,219 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 09:54:06,219 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] [2021-07-05 09:54:06,220 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-05 09:54:06,220 INFO L374 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 09:54:06,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 09:54:06,221 INFO L82 PathProgramCache]: Analyzing trace with hash 2111002242, now seen corresponding path program 1 times [2021-07-05 09:54:06,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 09:54:06,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067340951] [2021-07-05 09:54:06,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 09:54:06,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 09:54:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 09:54:06,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:06,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:06,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:06,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:06,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:06,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 09:54:06,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:06,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:06,279 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 09:54:06,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 09:54:06,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067340951] [2021-07-05 09:54:06,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067340951] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 09:54:06,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 09:54:06,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-05 09:54:06,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952510129] [2021-07-05 09:54:06,280 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-05 09:54:06,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 09:54:06,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-05 09:54:06,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-05 09:54:06,282 INFO L87 Difference]: Start difference. First operand 142 states and 195 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:06,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 09:54:06,316 INFO L93 Difference]: Finished difference Result 361 states and 495 transitions. [2021-07-05 09:54:06,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-05 09:54:06,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-05 09:54:06,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 09:54:06,318 INFO L225 Difference]: With dead ends: 361 [2021-07-05 09:54:06,318 INFO L226 Difference]: Without dead ends: 226 [2021-07-05 09:54:06,319 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-05 09:54:06,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-07-05 09:54:06,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 146. [2021-07-05 09:54:06,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.3724137931034484) internal successors, (199), 145 states have internal predecessors, (199), 0 states have call successors, (0), 0 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 09:54:06,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 199 transitions. [2021-07-05 09:54:06,330 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 199 transitions. Word has length 32 [2021-07-05 09:54:06,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 09:54:06,330 INFO L442 AbstractCegarLoop]: Abstraction has 146 states and 199 transitions. [2021-07-05 09:54:06,330 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:06,330 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 199 transitions. [2021-07-05 09:54:06,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-07-05 09:54:06,331 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 09:54:06,331 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] [2021-07-05 09:54:06,331 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-05 09:54:06,332 INFO L374 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 09:54:06,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 09:54:06,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1524196228, now seen corresponding path program 1 times [2021-07-05 09:54:06,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 09:54:06,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995115237] [2021-07-05 09:54:06,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 09:54:06,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 09:54:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 09:54:06,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:06,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 09:54:06,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:06,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:06,361 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 09:54:06,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 09:54:06,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995115237] [2021-07-05 09:54:06,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995115237] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 09:54:06,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 09:54:06,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-05 09:54:06,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157036478] [2021-07-05 09:54:06,363 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-05 09:54:06,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 09:54:06,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-05 09:54:06,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-05 09:54:06,364 INFO L87 Difference]: Start difference. First operand 146 states and 199 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:06,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 09:54:06,388 INFO L93 Difference]: Finished difference Result 371 states and 505 transitions. [2021-07-05 09:54:06,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-05 09:54:06,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-07-05 09:54:06,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 09:54:06,389 INFO L225 Difference]: With dead ends: 371 [2021-07-05 09:54:06,389 INFO L226 Difference]: Without dead ends: 232 [2021-07-05 09:54:06,390 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 09:54:06,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-07-05 09:54:06,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-07-05 09:54:06,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.329004329004329) internal successors, (307), 231 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 09:54:06,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 307 transitions. [2021-07-05 09:54:06,422 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 307 transitions. Word has length 32 [2021-07-05 09:54:06,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 09:54:06,422 INFO L442 AbstractCegarLoop]: Abstraction has 232 states and 307 transitions. [2021-07-05 09:54:06,422 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:06,423 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 307 transitions. [2021-07-05 09:54:06,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-07-05 09:54:06,423 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 09:54:06,423 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] [2021-07-05 09:54:06,424 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-05 09:54:06,424 INFO L374 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 09:54:06,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 09:54:06,424 INFO L82 PathProgramCache]: Analyzing trace with hash 61292740, now seen corresponding path program 1 times [2021-07-05 09:54:06,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 09:54:06,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529213278] [2021-07-05 09:54:06,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 09:54:06,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 09:54:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 09:54:06,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:06,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:06,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:06,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 09:54:06,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 09:54:06,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 09:54:06,455 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 09:54:06,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 09:54:06,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529213278] [2021-07-05 09:54:06,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529213278] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 09:54:06,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 09:54:06,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-05 09:54:06,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878439837] [2021-07-05 09:54:06,456 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-05 09:54:06,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 09:54:06,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-05 09:54:06,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-05 09:54:06,457 INFO L87 Difference]: Start difference. First operand 232 states and 307 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:06,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 09:54:06,490 INFO L93 Difference]: Finished difference Result 315 states and 418 transitions. [2021-07-05 09:54:06,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-05 09:54:06,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-07-05 09:54:06,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 09:54:06,492 INFO L225 Difference]: With dead ends: 315 [2021-07-05 09:54:06,493 INFO L226 Difference]: Without dead ends: 313 [2021-07-05 09:54:06,493 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 09:54:06,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-07-05 09:54:06,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 265. [2021-07-05 09:54:06,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.3484848484848484) internal successors, (356), 264 states have internal predecessors, (356), 0 states have call successors, (0), 0 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 09:54:06,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 356 transitions. [2021-07-05 09:54:06,513 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 356 transitions. Word has length 33 [2021-07-05 09:54:06,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 09:54:06,513 INFO L442 AbstractCegarLoop]: Abstraction has 265 states and 356 transitions. [2021-07-05 09:54:06,513 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 09:54:06,514 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 356 transitions. [2021-07-05 09:54:06,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-07-05 09:54:06,514 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 09:54:06,515 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] [2021-07-05 09:54:06,515 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-05 09:54:06,515 INFO L374 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 09:54:06,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 09:54:06,515 INFO L82 PathProgramCache]: Analyzing trace with hash 290012344, now seen corresponding path program 1 times [2021-07-05 09:54:06,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 09:54:06,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698912319] [2021-07-05 09:54:06,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 09:54:06,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 09:54:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-05 09:54:06,559 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-05 09:54:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-05 09:54:06,601 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-05 09:54:06,636 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-05 09:54:06,636 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-05 09:54:06,639 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-05 09:54:06,639 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 09:54:06,641 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION was UNSAFE (1/3) [2021-07-05 09:54:06,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.07 09:54:06 BoogieIcfgContainer [2021-07-05 09:54:06,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-05 09:54:06,745 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-05 09:54:06,745 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-05 09:54:06,745 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-05 09:54:06,745 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 09:54:04" (3/4) ... [2021-07-05 09:54:06,747 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-05 09:54:06,821 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-05 09:54:06,821 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-05 09:54:06,822 INFO L168 Benchmark]: Toolchain (without parser) took 3423.51 ms. Allocated memory was 73.4 MB in the beginning and 117.4 MB in the end (delta: 44.0 MB). Free memory was 54.3 MB in the beginning and 62.1 MB in the end (delta: -7.9 MB). Peak memory consumption was 37.1 MB. Max. memory is 16.1 GB. [2021-07-05 09:54:06,822 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 73.4 MB. Free memory is still 53.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 09:54:06,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.51 ms. Allocated memory is still 73.4 MB. Free memory was 54.1 MB in the beginning and 44.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-05 09:54:06,823 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.87 ms. Allocated memory is still 73.4 MB. Free memory was 44.9 MB in the beginning and 41.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-05 09:54:06,823 INFO L168 Benchmark]: Boogie Preprocessor took 30.15 ms. Allocated memory is still 73.4 MB. Free memory was 41.8 MB in the beginning and 39.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 09:54:06,824 INFO L168 Benchmark]: RCFGBuilder took 954.27 ms. Allocated memory was 73.4 MB in the beginning and 96.5 MB in the end (delta: 23.1 MB). Free memory was 39.4 MB in the beginning and 54.2 MB in the end (delta: -14.7 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-07-05 09:54:06,824 INFO L168 Benchmark]: TraceAbstraction took 1881.10 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 53.6 MB in the beginning and 83.1 MB in the end (delta: -29.5 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. [2021-07-05 09:54:06,824 INFO L168 Benchmark]: Witness Printer took 76.70 ms. Allocated memory is still 117.4 MB. Free memory was 83.1 MB in the beginning and 62.1 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-07-05 09:54:06,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 73.4 MB. Free memory is still 53.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 421.51 ms. Allocated memory is still 73.4 MB. Free memory was 54.1 MB in the beginning and 44.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.87 ms. Allocated memory is still 73.4 MB. Free memory was 44.9 MB in the beginning and 41.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.15 ms. Allocated memory is still 73.4 MB. Free memory was 41.8 MB in the beginning and 39.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 954.27 ms. Allocated memory was 73.4 MB in the beginning and 96.5 MB in the end (delta: 23.1 MB). Free memory was 39.4 MB in the beginning and 54.2 MB in the end (delta: -14.7 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1881.10 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 53.6 MB in the beginning and 83.1 MB in the end (delta: -29.5 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. * Witness Printer took 76.70 ms. Allocated memory is still 117.4 MB. Free memory was 83.1 MB in the beginning and 62.1 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 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: 902]: 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; [L547] int cleanupTimeShifts = 4; [L653] int pumpRunning = 0; [L654] int systemActive = 1; [L907] int methAndRunningLastTime ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L625] int retValue_acc ; [L626] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L538] int retValue_acc ; [L541] retValue_acc = 1 [L542] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L632] tmp = valid_product() [L634] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L912] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L830] int splverifierCounter ; [L831] int tmp ; [L832] int tmp___0 ; [L833] int tmp___1 ; [L834] int tmp___2 ; [L837] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L839] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L841] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L847] tmp = __VERIFIER_nondet_int() [L849] 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] [L857] tmp___0 = __VERIFIER_nondet_int() [L859] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L79] COND FALSE !(\read(methaneLevelCritical)) [L82] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L867] tmp___2 = __VERIFIER_nondet_int() [L869] COND TRUE \read(tmp___2) [L824] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L661] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L668] COND TRUE \read(systemActive) [L690] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L693] COND TRUE ! pumpRunning [L787] int retValue_acc ; [L788] int tmp ; [L789] int tmp___0 ; [L129] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, 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=1, pumpRunning=0, systemActive=1, waterLevel=2] [L793] tmp = isHighWaterSensorDry() [L795] COND FALSE !(\read(tmp)) [L798] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L800] retValue_acc = tmp___0 [L801] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L695] tmp = isHighWaterLevel() [L697] COND TRUE \read(tmp) [L718] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L917] int tmp ; [L918] 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=2] [L922] tmp = isMethaneLevelCritical() [L924] COND TRUE \read(tmp) [L742] int retValue_acc ; [L745] retValue_acc = pumpRunning [L746] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L926] tmp___0 = isPumpRunning() [L928] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L929] COND FALSE !(\read(methAndRunningLastTime)) [L934] methAndRunningLastTime = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L839] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L841] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L847] tmp = __VERIFIER_nondet_int() [L849] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L857] tmp___0 = __VERIFIER_nondet_int() [L859] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L867] tmp___2 = __VERIFIER_nondet_int() [L869] COND TRUE \read(tmp___2) [L824] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L661] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L55] COND TRUE waterLevel > 0 [L56] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L668] COND TRUE \read(systemActive) [L690] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L693] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L917] int tmp ; [L918] 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=1] [L922] tmp = isMethaneLevelCritical() [L924] COND TRUE \read(tmp) [L742] int retValue_acc ; [L745] retValue_acc = pumpRunning [L746] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L926] tmp___0 = isPumpRunning() [L928] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L929] COND TRUE \read(methAndRunningLastTime) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L902] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION CFG has 1 procedures, 84 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1709.7ms, OverallIterations: 9, TraceHistogramMax: 2, EmptinessCheckTime: 23.5ms, AutomataDifference: 546.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 600 SDtfs, 1113 SDslu, 987 SDs, 0 SdLazy, 117 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 130.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 141.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=265occurred in iteration=8, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 161.4ms AutomataMinimizationTime, 8 MinimizatonAttempts, 648 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 39.9ms SsaConstructionTime, 285.6ms SatisfiabilityAnalysisTime, 366.4ms InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 225 ConstructedInterpolants, 0 QuantifiedInterpolants, 463 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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 09:54:06,877 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...