./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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_spec1_product40.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 78c3727bd3b2d1a7a3f467704564f87e93e64a9d ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-9a8b2e8 [2020-10-20 01:41:39,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:41:39,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:41:39,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:41:39,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:41:39,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:41:39,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:41:39,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:41:39,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:41:39,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:41:39,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:41:39,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:41:39,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:41:39,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:41:39,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:41:39,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:41:39,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:41:39,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:41:39,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:41:39,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:41:39,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:41:39,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:41:39,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:41:39,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:41:39,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:41:39,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:41:39,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:41:39,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:41:39,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:41:39,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:41:39,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:41:39,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:41:39,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:41:39,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:41:40,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:41:40,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:41:40,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:41:40,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:41:40,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:41:40,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:41:40,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:41:40,005 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:41:40,027 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:41:40,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:41:40,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:41:40,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:41:40,029 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:41:40,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:41:40,029 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:41:40,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:41:40,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:41:40,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:41:40,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:41:40,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:41:40,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:41:40,030 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:41:40,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:41:40,031 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:41:40,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:41:40,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:41:40,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:41:40,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:41:40,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:41:40,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:41:40,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:41:40,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:41:40,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:41:40,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:41:40,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:41:40,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:41:40,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:41:40,034 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 78c3727bd3b2d1a7a3f467704564f87e93e64a9d [2020-10-20 01:41:40,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:41:40,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:41:40,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:41:40,283 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:41:40,284 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:41:40,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c [2020-10-20 01:41:40,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b7ec20e5/4cae4181cf424386a4d2f4d4718a5cec/FLAGa9a8a924e [2020-10-20 01:41:40,826 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:41:40,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c [2020-10-20 01:41:40,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b7ec20e5/4cae4181cf424386a4d2f4d4718a5cec/FLAGa9a8a924e [2020-10-20 01:41:41,108 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b7ec20e5/4cae4181cf424386a4d2f4d4718a5cec [2020-10-20 01:41:41,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:41:41,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:41:41,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:41,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:41:41,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:41:41,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:41" (1/1) ... [2020-10-20 01:41:41,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc13a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:41, skipping insertion in model container [2020-10-20 01:41:41,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:41" (1/1) ... [2020-10-20 01:41:41,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:41:41,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:41:41,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:41,561 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:41:41,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:41,733 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:41:41,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:41 WrapperNode [2020-10-20 01:41:41,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:41,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:41,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:41:41,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:41:41,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:41" (1/1) ... [2020-10-20 01:41:41,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:41" (1/1) ... [2020-10-20 01:41:41,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:41,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:41:41,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:41:41,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:41:41,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:41" (1/1) ... [2020-10-20 01:41:41,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:41" (1/1) ... [2020-10-20 01:41:41,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:41" (1/1) ... [2020-10-20 01:41:41,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:41" (1/1) ... [2020-10-20 01:41:41,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:41" (1/1) ... [2020-10-20 01:41:41,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:41" (1/1) ... [2020-10-20 01:41:41,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:41" (1/1) ... [2020-10-20 01:41:41,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:41:41,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:41:41,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:41:41,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:41:41,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:41:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:41:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:41:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:41:41,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:41:42,838 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:41:42,838 INFO L298 CfgBuilder]: Removed 168 assume(true) statements. [2020-10-20 01:41:42,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:42 BoogieIcfgContainer [2020-10-20 01:41:42,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:41:42,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:41:42,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:41:42,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:41:42,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:41:41" (1/3) ... [2020-10-20 01:41:42,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13835170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:41:42, skipping insertion in model container [2020-10-20 01:41:42,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:41" (2/3) ... [2020-10-20 01:41:42,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13835170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:41:42, skipping insertion in model container [2020-10-20 01:41:42,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:42" (3/3) ... [2020-10-20 01:41:42,851 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product40.cil.c [2020-10-20 01:41:42,864 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:41:42,872 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:41:42,887 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:41:42,914 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:41:42,914 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:41:42,914 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:41:42,915 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:41:42,915 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:41:42,915 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:41:42,916 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:41:42,916 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:41:42,949 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-10-20 01:41:42,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 01:41:42,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:42,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:42,956 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:42,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:42,963 INFO L82 PathProgramCache]: Analyzing trace with hash -515765374, now seen corresponding path program 1 times [2020-10-20 01:41:42,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:42,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451402454] [2020-10-20 01:41:42,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:43,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451402454] [2020-10-20 01:41:43,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:43,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:43,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802824978] [2020-10-20 01:41:43,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:41:43,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:43,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:41:43,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:41:43,284 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 2 states. [2020-10-20 01:41:43,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:43,319 INFO L93 Difference]: Finished difference Result 223 states and 338 transitions. [2020-10-20 01:41:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:41:43,321 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-20 01:41:43,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:43,333 INFO L225 Difference]: With dead ends: 223 [2020-10-20 01:41:43,334 INFO L226 Difference]: Without dead ends: 109 [2020-10-20 01:41:43,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:41:43,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-20 01:41:43,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-20 01:41:43,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-20 01:41:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2020-10-20 01:41:43,413 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2020-10-20 01:41:43,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:43,414 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2020-10-20 01:41:43,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:41:43,415 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2020-10-20 01:41:43,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:41:43,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:43,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:43,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:41:43,419 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:43,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:43,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1562522271, now seen corresponding path program 1 times [2020-10-20 01:41:43,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:43,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940298270] [2020-10-20 01:41:43,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:43,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:43,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940298270] [2020-10-20 01:41:43,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:43,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:41:43,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403367468] [2020-10-20 01:41:43,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:43,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:43,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:43,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:43,560 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 3 states. [2020-10-20 01:41:43,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:43,574 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2020-10-20 01:41:43,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:43,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 01:41:43,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:43,576 INFO L225 Difference]: With dead ends: 109 [2020-10-20 01:41:43,577 INFO L226 Difference]: Without dead ends: 47 [2020-10-20 01:41:43,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:43,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-20 01:41:43,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-20 01:41:43,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-20 01:41:43,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2020-10-20 01:41:43,585 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2020-10-20 01:41:43,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:43,586 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2020-10-20 01:41:43,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:43,586 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2020-10-20 01:41:43,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 01:41:43,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:43,587 INFO L422 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] [2020-10-20 01:41:43,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:41:43,588 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:43,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:43,589 INFO L82 PathProgramCache]: Analyzing trace with hash 109011716, now seen corresponding path program 1 times [2020-10-20 01:41:43,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:43,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191357913] [2020-10-20 01:41:43,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:43,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191357913] [2020-10-20 01:41:43,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:43,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:41:43,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032490899] [2020-10-20 01:41:43,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:43,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:43,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:43,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:43,706 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 5 states. [2020-10-20 01:41:43,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:43,781 INFO L93 Difference]: Finished difference Result 111 states and 164 transitions. [2020-10-20 01:41:43,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:41:43,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-20 01:41:43,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:43,783 INFO L225 Difference]: With dead ends: 111 [2020-10-20 01:41:43,783 INFO L226 Difference]: Without dead ends: 70 [2020-10-20 01:41:43,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:41:43,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-20 01:41:43,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2020-10-20 01:41:43,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-20 01:41:43,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2020-10-20 01:41:43,795 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 22 [2020-10-20 01:41:43,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:43,796 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2020-10-20 01:41:43,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:43,796 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2020-10-20 01:41:43,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 01:41:43,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:43,798 INFO L422 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] [2020-10-20 01:41:43,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:41:43,799 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:43,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:43,799 INFO L82 PathProgramCache]: Analyzing trace with hash 60563277, now seen corresponding path program 1 times [2020-10-20 01:41:43,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:43,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240433147] [2020-10-20 01:41:43,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:43,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240433147] [2020-10-20 01:41:43,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:43,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:43,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284526212] [2020-10-20 01:41:43,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:43,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:43,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:43,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:43,880 INFO L87 Difference]: Start difference. First operand 66 states and 97 transitions. Second operand 3 states. [2020-10-20 01:41:43,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:43,927 INFO L93 Difference]: Finished difference Result 147 states and 218 transitions. [2020-10-20 01:41:43,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:43,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-20 01:41:43,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:43,929 INFO L225 Difference]: With dead ends: 147 [2020-10-20 01:41:43,929 INFO L226 Difference]: Without dead ends: 87 [2020-10-20 01:41:43,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:43,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-20 01:41:43,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-10-20 01:41:43,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-20 01:41:43,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2020-10-20 01:41:43,942 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 24 [2020-10-20 01:41:43,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:43,943 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2020-10-20 01:41:43,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:43,943 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2020-10-20 01:41:43,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 01:41:43,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:43,944 INFO L422 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] [2020-10-20 01:41:43,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:41:43,945 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:43,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:43,946 INFO L82 PathProgramCache]: Analyzing trace with hash -445763815, now seen corresponding path program 1 times [2020-10-20 01:41:43,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:43,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882522689] [2020-10-20 01:41:43,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:44,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882522689] [2020-10-20 01:41:44,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:44,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:44,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588128340] [2020-10-20 01:41:44,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:44,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:44,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:44,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:44,023 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand 5 states. [2020-10-20 01:41:44,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:44,185 INFO L93 Difference]: Finished difference Result 413 states and 601 transitions. [2020-10-20 01:41:44,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 01:41:44,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-20 01:41:44,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:44,191 INFO L225 Difference]: With dead ends: 413 [2020-10-20 01:41:44,191 INFO L226 Difference]: Without dead ends: 334 [2020-10-20 01:41:44,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:41:44,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-20 01:41:44,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 156. [2020-10-20 01:41:44,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-20 01:41:44,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 220 transitions. [2020-10-20 01:41:44,216 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 220 transitions. Word has length 25 [2020-10-20 01:41:44,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:44,217 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 220 transitions. [2020-10-20 01:41:44,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:44,217 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 220 transitions. [2020-10-20 01:41:44,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 01:41:44,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:44,219 INFO L422 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] [2020-10-20 01:41:44,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:41:44,219 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:44,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:44,220 INFO L82 PathProgramCache]: Analyzing trace with hash -649570909, now seen corresponding path program 1 times [2020-10-20 01:41:44,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:44,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846671611] [2020-10-20 01:41:44,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:44,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:44,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846671611] [2020-10-20 01:41:44,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:44,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:44,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489813039] [2020-10-20 01:41:44,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:44,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:44,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:44,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:44,300 INFO L87 Difference]: Start difference. First operand 156 states and 220 transitions. Second operand 5 states. [2020-10-20 01:41:44,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:44,504 INFO L93 Difference]: Finished difference Result 436 states and 619 transitions. [2020-10-20 01:41:44,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:41:44,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-20 01:41:44,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:44,509 INFO L225 Difference]: With dead ends: 436 [2020-10-20 01:41:44,509 INFO L226 Difference]: Without dead ends: 434 [2020-10-20 01:41:44,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:41:44,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-20 01:41:44,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 156. [2020-10-20 01:41:44,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-20 01:41:44,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 218 transitions. [2020-10-20 01:41:44,557 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 218 transitions. Word has length 26 [2020-10-20 01:41:44,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:44,558 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 218 transitions. [2020-10-20 01:41:44,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:44,558 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 218 transitions. [2020-10-20 01:41:44,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:41:44,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:44,561 INFO L422 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] [2020-10-20 01:41:44,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:41:44,562 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:44,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:44,562 INFO L82 PathProgramCache]: Analyzing trace with hash 108971892, now seen corresponding path program 1 times [2020-10-20 01:41:44,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:44,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826755366] [2020-10-20 01:41:44,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:44,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826755366] [2020-10-20 01:41:44,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:44,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:41:44,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744574142] [2020-10-20 01:41:44,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:44,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:44,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:44,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:44,649 INFO L87 Difference]: Start difference. First operand 156 states and 218 transitions. Second operand 5 states. [2020-10-20 01:41:44,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:44,740 INFO L93 Difference]: Finished difference Result 468 states and 648 transitions. [2020-10-20 01:41:44,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:41:44,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-20 01:41:44,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:44,743 INFO L225 Difference]: With dead ends: 468 [2020-10-20 01:41:44,743 INFO L226 Difference]: Without dead ends: 318 [2020-10-20 01:41:44,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:41:44,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-20 01:41:44,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 168. [2020-10-20 01:41:44,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-20 01:41:44,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 230 transitions. [2020-10-20 01:41:44,763 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 230 transitions. Word has length 31 [2020-10-20 01:41:44,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:44,763 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 230 transitions. [2020-10-20 01:41:44,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:44,764 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 230 transitions. [2020-10-20 01:41:44,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:41:44,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:44,766 INFO L422 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] [2020-10-20 01:41:44,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 01:41:44,767 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:44,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:44,767 INFO L82 PathProgramCache]: Analyzing trace with hash -284055118, now seen corresponding path program 1 times [2020-10-20 01:41:44,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:44,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689307726] [2020-10-20 01:41:44,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:44,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:44,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689307726] [2020-10-20 01:41:44,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:44,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 01:41:44,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740224455] [2020-10-20 01:41:44,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:41:44,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:44,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:41:44,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:41:44,831 INFO L87 Difference]: Start difference. First operand 168 states and 230 transitions. Second operand 6 states. [2020-10-20 01:41:45,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:45,058 INFO L93 Difference]: Finished difference Result 502 states and 682 transitions. [2020-10-20 01:41:45,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 01:41:45,059 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-20 01:41:45,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:45,063 INFO L225 Difference]: With dead ends: 502 [2020-10-20 01:41:45,063 INFO L226 Difference]: Without dead ends: 340 [2020-10-20 01:41:45,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-20 01:41:45,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-20 01:41:45,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 176. [2020-10-20 01:41:45,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-20 01:41:45,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 238 transitions. [2020-10-20 01:41:45,085 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 238 transitions. Word has length 31 [2020-10-20 01:41:45,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:45,085 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 238 transitions. [2020-10-20 01:41:45,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:41:45,086 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 238 transitions. [2020-10-20 01:41:45,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:41:45,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:45,093 INFO L422 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] [2020-10-20 01:41:45,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 01:41:45,094 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:45,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:45,094 INFO L82 PathProgramCache]: Analyzing trace with hash -25889680, now seen corresponding path program 1 times [2020-10-20 01:41:45,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:45,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108218466] [2020-10-20 01:41:45,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:45,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:45,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108218466] [2020-10-20 01:41:45,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:45,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:45,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710042763] [2020-10-20 01:41:45,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:45,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:45,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:45,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:45,167 INFO L87 Difference]: Start difference. First operand 176 states and 238 transitions. Second operand 3 states. [2020-10-20 01:41:45,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:45,208 INFO L93 Difference]: Finished difference Result 434 states and 586 transitions. [2020-10-20 01:41:45,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:45,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-20 01:41:45,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:45,211 INFO L225 Difference]: With dead ends: 434 [2020-10-20 01:41:45,211 INFO L226 Difference]: Without dead ends: 264 [2020-10-20 01:41:45,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:45,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-20 01:41:45,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2020-10-20 01:41:45,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-20 01:41:45,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 348 transitions. [2020-10-20 01:41:45,238 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 348 transitions. Word has length 31 [2020-10-20 01:41:45,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:45,240 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 348 transitions. [2020-10-20 01:41:45,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:45,240 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 348 transitions. [2020-10-20 01:41:45,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 01:41:45,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:45,244 INFO L422 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] [2020-10-20 01:41:45,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 01:41:45,244 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:45,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:45,245 INFO L82 PathProgramCache]: Analyzing trace with hash -2138649550, now seen corresponding path program 1 times [2020-10-20 01:41:45,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:45,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525479118] [2020-10-20 01:41:45,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:45,338 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:45,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:45,393 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:45,440 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:41:45,440 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:41:45,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 01:41:45,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:41:45 BoogieIcfgContainer [2020-10-20 01:41:45,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:41:45,537 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:41:45,537 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:41:45,537 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:41:45,538 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:42" (3/4) ... [2020-10-20 01:41:45,540 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:41:45,644 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:41:45,644 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:41:45,647 INFO L168 Benchmark]: Toolchain (without parser) took 4533.09 ms. Allocated memory was 34.6 MB in the beginning and 72.9 MB in the end (delta: 38.3 MB). Free memory was 11.0 MB in the beginning and 38.8 MB in the end (delta: -27.8 MB). Peak memory consumption was 32.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:45,647 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 33.0 MB. Free memory was 18.0 MB in the beginning and 17.9 MB in the end (delta: 40.4 kB). Peak memory consumption was 40.4 kB. Max. memory is 14.3 GB. [2020-10-20 01:41:45,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 615.69 ms. Allocated memory was 34.6 MB in the beginning and 44.0 MB in the end (delta: 9.4 MB). Free memory was 10.1 MB in the beginning and 20.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:45,648 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.62 ms. Allocated memory is still 44.0 MB. Free memory was 20.0 MB in the beginning and 16.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:45,649 INFO L168 Benchmark]: Boogie Preprocessor took 64.76 ms. Allocated memory is still 44.0 MB. Free memory was 16.1 MB in the beginning and 13.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:45,649 INFO L168 Benchmark]: RCFGBuilder took 959.26 ms. Allocated memory was 44.0 MB in the beginning and 49.3 MB in the end (delta: 5.2 MB). Free memory was 13.0 MB in the beginning and 14.8 MB in the end (delta: -1.8 MB). Peak memory consumption was 6.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:45,650 INFO L168 Benchmark]: TraceAbstraction took 2693.79 ms. Allocated memory was 49.3 MB in the beginning and 70.8 MB in the end (delta: 21.5 MB). Free memory was 14.5 MB in the beginning and 21.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 14.9 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:45,651 INFO L168 Benchmark]: Witness Printer took 107.43 ms. Allocated memory was 70.8 MB in the beginning and 72.9 MB in the end (delta: 2.1 MB). Free memory was 21.1 MB in the beginning and 38.8 MB in the end (delta: -17.7 MB). Peak memory consumption was 6.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:45,654 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 33.0 MB. Free memory was 18.0 MB in the beginning and 17.9 MB in the end (delta: 40.4 kB). Peak memory consumption was 40.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 615.69 ms. Allocated memory was 34.6 MB in the beginning and 44.0 MB in the end (delta: 9.4 MB). Free memory was 10.1 MB in the beginning and 20.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 80.62 ms. Allocated memory is still 44.0 MB. Free memory was 20.0 MB in the beginning and 16.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 64.76 ms. Allocated memory is still 44.0 MB. Free memory was 16.1 MB in the beginning and 13.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 959.26 ms. Allocated memory was 44.0 MB in the beginning and 49.3 MB in the end (delta: 5.2 MB). Free memory was 13.0 MB in the beginning and 14.8 MB in the end (delta: -1.8 MB). Peak memory consumption was 6.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2693.79 ms. Allocated memory was 49.3 MB in the beginning and 70.8 MB in the end (delta: 21.5 MB). Free memory was 14.5 MB in the beginning and 21.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 14.9 MB. Max. memory is 14.3 GB. * Witness Printer took 107.43 ms. Allocated memory was 70.8 MB in the beginning and 72.9 MB in the end (delta: 2.1 MB). Free memory was 21.1 MB in the beginning and 38.8 MB in the end (delta: -17.7 MB). Peak memory consumption was 6.2 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L53] int pumpRunning = 0; [L54] int systemActive = 1; [L354] int cleanupTimeShifts = 4; [L666] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L864] int waterLevel = 1; [L865] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L430] int retValue_acc ; [L431] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L479] int retValue_acc ; [L482] retValue_acc = 1 [L483] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L437] tmp = valid_product() [L439] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L259] int splverifierCounter ; [L260] int tmp ; [L261] int tmp___0 ; [L262] int tmp___1 ; [L263] int tmp___2 ; [L266] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L268] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L270] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L276] tmp = __VERIFIER_nondet_int() [L278] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L882] COND TRUE waterLevel < 2 [L883] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L286] tmp___0 = __VERIFIER_nondet_int() [L288] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L894] COND FALSE !(\read(methaneLevelCritical)) [L897] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L296] tmp___2 = __VERIFIER_nondet_int() [L298] COND TRUE \read(tmp___2) [L250] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L61] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L68] COND TRUE \read(systemActive) [L116] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L119] COND FALSE !(\read(pumpRunning)) [L90] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L93] COND TRUE ! pumpRunning [L213] int retValue_acc ; [L214] int tmp ; [L215] int tmp___0 ; [L944] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L947] COND FALSE !(waterLevel < 2) [L951] retValue_acc = 0 [L952] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L219] tmp = isHighWaterSensorDry() [L221] COND FALSE !(\read(tmp)) [L224] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L226] retValue_acc = tmp___0 [L227] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L95] tmp = isHighWaterLevel() [L97] COND TRUE \read(tmp) [L144] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L329] int tmp ; [L330] int tmp___0 ; [L903] int retValue_acc ; [L906] retValue_acc = methaneLevelCritical [L907] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L334] tmp = isMethaneLevelCritical() [L336] COND TRUE \read(tmp) [L168] int retValue_acc ; [L171] retValue_acc = pumpRunning [L172] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L338] tmp___0 = isPumpRunning() [L340] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L3] __assert_fail("0", "minepump_spec1_product40.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 116 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 829 SDtfs, 1296 SDslu, 1083 SDs, 0 SdLazy, 160 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=264occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 776 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 10236 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! Received shutdown request...