./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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_spec1_product34.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 2195b79e9318debfd37e6b0067135f78488fab28 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-dev-20ed64e [2021-08-26 08:42:48,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 08:42:48,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 08:42:48,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 08:42:48,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 08:42:48,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 08:42:48,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 08:42:48,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 08:42:48,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 08:42:48,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 08:42:48,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 08:42:48,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 08:42:48,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 08:42:48,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 08:42:48,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 08:42:48,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 08:42:48,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 08:42:48,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 08:42:48,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 08:42:48,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 08:42:48,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 08:42:48,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 08:42:48,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 08:42:48,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 08:42:48,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 08:42:48,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 08:42:48,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 08:42:48,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 08:42:48,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 08:42:48,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 08:42:48,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 08:42:48,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 08:42:48,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 08:42:48,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 08:42:48,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 08:42:48,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 08:42:48,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 08:42:48,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 08:42:48,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 08:42:48,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 08:42:48,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 08:42:48,564 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 08:42:48,589 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 08:42:48,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 08:42:48,590 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 08:42:48,590 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 08:42:48,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 08:42:48,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 08:42:48,592 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 08:42:48,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 08:42:48,592 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 08:42:48,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 08:42:48,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 08:42:48,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 08:42:48,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 08:42:48,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 08:42:48,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 08:42:48,593 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 08:42:48,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 08:42:48,593 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 08:42:48,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 08:42:48,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 08:42:48,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 08:42:48,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 08:42:48,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 08:42:48,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 08:42:48,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 08:42:48,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 08:42:48,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 08:42:48,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 08:42:48,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 08:42:48,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 08:42:48,595 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2195b79e9318debfd37e6b0067135f78488fab28 [2021-08-26 08:42:48,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 08:42:48,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 08:42:48,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 08:42:48,876 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 08:42:48,880 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 08:42:48,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c [2021-08-26 08:42:48,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ef448cff/db3f64ed5e65445d862c39a5412d5322/FLAG32431e258 [2021-08-26 08:42:49,298 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 08:42:49,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c [2021-08-26 08:42:49,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ef448cff/db3f64ed5e65445d862c39a5412d5322/FLAG32431e258 [2021-08-26 08:42:49,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ef448cff/db3f64ed5e65445d862c39a5412d5322 [2021-08-26 08:42:49,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 08:42:49,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 08:42:49,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 08:42:49,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 08:42:49,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 08:42:49,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:42:49" (1/1) ... [2021-08-26 08:42:49,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183e12ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:49, skipping insertion in model container [2021-08-26 08:42:49,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:42:49" (1/1) ... [2021-08-26 08:42:49,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 08:42:49,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 08:42:49,890 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c[12260,12273] [2021-08-26 08:42:49,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 08:42:49,934 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 08:42:49,989 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c[12260,12273] [2021-08-26 08:42:50,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 08:42:50,031 INFO L208 MainTranslator]: Completed translation [2021-08-26 08:42:50,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50 WrapperNode [2021-08-26 08:42:50,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 08:42:50,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 08:42:50,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 08:42:50,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 08:42:50,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 08:42:50,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 08:42:50,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 08:42:50,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 08:42:50,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 08:42:50,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 08:42:50,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 08:42:50,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 08:42:50,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,147 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 08:42:50,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 08:42:50,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 08:42:50,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 08:42:50,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 08:42:50,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 08:42:50,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 08:42:50,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 08:42:50,879 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 08:42:50,880 INFO L299 CfgBuilder]: Removed 98 assume(true) statements. [2021-08-26 08:42:50,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:42:50 BoogieIcfgContainer [2021-08-26 08:42:50,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 08:42:50,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 08:42:50,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 08:42:50,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 08:42:50,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 08:42:49" (1/3) ... [2021-08-26 08:42:50,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6f546a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:42:50, skipping insertion in model container [2021-08-26 08:42:50,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (2/3) ... [2021-08-26 08:42:50,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6f546a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:42:50, skipping insertion in model container [2021-08-26 08:42:50,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:42:50" (3/3) ... [2021-08-26 08:42:50,886 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2021-08-26 08:42:50,891 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 08:42:50,891 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-08-26 08:42:50,919 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 08:42:50,923 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 08:42:50,923 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-26 08:42:50,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 74 states have (on average 1.5810810810810811) internal successors, (117), 77 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:50,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 08:42:50,937 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:50,937 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:42:50,938 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:50,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:50,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1424204181, now seen corresponding path program 1 times [2021-08-26 08:42:50,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:50,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768606727] [2021-08-26 08:42:50,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:50,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:42:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:42:51,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:42:51,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768606727] [2021-08-26 08:42:51,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768606727] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:42:51,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:42:51,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 08:42:51,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794789258] [2021-08-26 08:42:51,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 08:42:51,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:42:51,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 08:42:51,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 08:42:51,190 INFO L87 Difference]: Start difference. First operand has 78 states, 74 states have (on average 1.5810810810810811) internal successors, (117), 77 states have internal predecessors, (117), 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 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:42:51,217 INFO L93 Difference]: Finished difference Result 150 states and 227 transitions. [2021-08-26 08:42:51,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 08:42:51,218 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2021-08-26 08:42:51,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:42:51,224 INFO L225 Difference]: With dead ends: 150 [2021-08-26 08:42:51,225 INFO L226 Difference]: Without dead ends: 74 [2021-08-26 08:42:51,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 08:42:51,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-08-26 08:42:51,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-08-26 08:42:51,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 73 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2021-08-26 08:42:51,264 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2021-08-26 08:42:51,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:42:51,266 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2021-08-26 08:42:51,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,266 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2021-08-26 08:42:51,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 08:42:51,267 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:51,267 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:42:51,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 08:42:51,268 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:51,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:51,269 INFO L82 PathProgramCache]: Analyzing trace with hash -631654862, now seen corresponding path program 1 times [2021-08-26 08:42:51,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:51,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436599851] [2021-08-26 08:42:51,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:51,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:42:51,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:42:51,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:42:51,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436599851] [2021-08-26 08:42:51,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436599851] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:42:51,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:42:51,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 08:42:51,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496196965] [2021-08-26 08:42:51,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 08:42:51,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:42:51,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 08:42:51,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:42:51,329 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:42:51,335 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2021-08-26 08:42:51,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 08:42:51,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-08-26 08:42:51,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:42:51,336 INFO L225 Difference]: With dead ends: 74 [2021-08-26 08:42:51,336 INFO L226 Difference]: Without dead ends: 34 [2021-08-26 08:42:51,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:42:51,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-26 08:42:51,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-08-26 08:42:51,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 33 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2021-08-26 08:42:51,339 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2021-08-26 08:42:51,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:42:51,339 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2021-08-26 08:42:51,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,339 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2021-08-26 08:42:51,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-26 08:42:51,340 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:51,340 INFO L512 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] [2021-08-26 08:42:51,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 08:42:51,340 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:51,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:51,341 INFO L82 PathProgramCache]: Analyzing trace with hash -964945646, now seen corresponding path program 1 times [2021-08-26 08:42:51,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:51,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970442654] [2021-08-26 08:42:51,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:51,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:42:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:42:51,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:42:51,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970442654] [2021-08-26 08:42:51,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970442654] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:42:51,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:42:51,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 08:42:51,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419960763] [2021-08-26 08:42:51,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 08:42:51,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:42:51,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 08:42:51,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:42:51,413 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:42:51,448 INFO L93 Difference]: Finished difference Result 62 states and 90 transitions. [2021-08-26 08:42:51,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 08:42:51,448 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2021-08-26 08:42:51,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:42:51,449 INFO L225 Difference]: With dead ends: 62 [2021-08-26 08:42:51,449 INFO L226 Difference]: Without dead ends: 34 [2021-08-26 08:42:51,449 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-26 08:42:51,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-26 08:42:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-08-26 08:42:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2021-08-26 08:42:51,452 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 22 [2021-08-26 08:42:51,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:42:51,452 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2021-08-26 08:42:51,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,452 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2021-08-26 08:42:51,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-26 08:42:51,453 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:51,453 INFO L512 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] [2021-08-26 08:42:51,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 08:42:51,453 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:51,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:51,453 INFO L82 PathProgramCache]: Analyzing trace with hash -952202930, now seen corresponding path program 1 times [2021-08-26 08:42:51,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:51,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392956796] [2021-08-26 08:42:51,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:51,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:42:51,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:42:51,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:42:51,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392956796] [2021-08-26 08:42:51,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392956796] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:42:51,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:42:51,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 08:42:51,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051462646] [2021-08-26 08:42:51,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 08:42:51,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:42:51,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 08:42:51,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:42:51,497 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:42:51,515 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2021-08-26 08:42:51,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 08:42:51,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2021-08-26 08:42:51,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:42:51,516 INFO L225 Difference]: With dead ends: 83 [2021-08-26 08:42:51,516 INFO L226 Difference]: Without dead ends: 55 [2021-08-26 08:42:51,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:42:51,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-08-26 08:42:51,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2021-08-26 08:42:51,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.4230769230769231) internal successors, (74), 52 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 74 transitions. [2021-08-26 08:42:51,521 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 74 transitions. Word has length 23 [2021-08-26 08:42:51,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:42:51,522 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 74 transitions. [2021-08-26 08:42:51,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,522 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 74 transitions. [2021-08-26 08:42:51,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-26 08:42:51,522 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:51,522 INFO L512 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] [2021-08-26 08:42:51,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 08:42:51,522 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:51,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:51,523 INFO L82 PathProgramCache]: Analyzing trace with hash -2049720417, now seen corresponding path program 1 times [2021-08-26 08:42:51,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:51,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942364593] [2021-08-26 08:42:51,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:51,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:42:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:42:51,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:42:51,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942364593] [2021-08-26 08:42:51,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942364593] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:42:51,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:42:51,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 08:42:51,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362688898] [2021-08-26 08:42:51,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 08:42:51,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:42:51,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 08:42:51,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:42:51,574 INFO L87 Difference]: Start difference. First operand 53 states and 74 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:42:51,624 INFO L93 Difference]: Finished difference Result 139 states and 194 transitions. [2021-08-26 08:42:51,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 08:42:51,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2021-08-26 08:42:51,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:42:51,625 INFO L225 Difference]: With dead ends: 139 [2021-08-26 08:42:51,625 INFO L226 Difference]: Without dead ends: 92 [2021-08-26 08:42:51,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-26 08:42:51,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-08-26 08:42:51,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2021-08-26 08:42:51,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4) internal successors, (77), 55 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2021-08-26 08:42:51,630 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 29 [2021-08-26 08:42:51,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:42:51,630 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2021-08-26 08:42:51,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,630 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2021-08-26 08:42:51,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-26 08:42:51,631 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:51,631 INFO L512 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] [2021-08-26 08:42:51,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-26 08:42:51,631 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:51,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:51,631 INFO L82 PathProgramCache]: Analyzing trace with hash 612790626, now seen corresponding path program 1 times [2021-08-26 08:42:51,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:51,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59595236] [2021-08-26 08:42:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:51,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:42:51,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:42:51,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:42:51,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59595236] [2021-08-26 08:42:51,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59595236] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:42:51,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:42:51,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 08:42:51,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737604866] [2021-08-26 08:42:51,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 08:42:51,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:42:51,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 08:42:51,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:42:51,684 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:42:51,756 INFO L93 Difference]: Finished difference Result 270 states and 384 transitions. [2021-08-26 08:42:51,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 08:42:51,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 29 [2021-08-26 08:42:51,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:42:51,758 INFO L225 Difference]: With dead ends: 270 [2021-08-26 08:42:51,758 INFO L226 Difference]: Without dead ends: 220 [2021-08-26 08:42:51,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-26 08:42:51,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-08-26 08:42:51,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 100. [2021-08-26 08:42:51,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.3838383838383839) internal successors, (137), 99 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 137 transitions. [2021-08-26 08:42:51,767 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 137 transitions. Word has length 29 [2021-08-26 08:42:51,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:42:51,767 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 137 transitions. [2021-08-26 08:42:51,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 137 transitions. [2021-08-26 08:42:51,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-26 08:42:51,768 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:51,768 INFO L512 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] [2021-08-26 08:42:51,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-26 08:42:51,769 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:51,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:51,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1166654740, now seen corresponding path program 1 times [2021-08-26 08:42:51,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:51,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627697939] [2021-08-26 08:42:51,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:51,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:42:51,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:42:51,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:42:51,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627697939] [2021-08-26 08:42:51,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627697939] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:42:51,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:42:51,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 08:42:51,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839406536] [2021-08-26 08:42:51,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 08:42:51,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:42:51,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 08:42:51,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:42:51,823 INFO L87 Difference]: Start difference. First operand 100 states and 137 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:42:51,924 INFO L93 Difference]: Finished difference Result 280 states and 386 transitions. [2021-08-26 08:42:51,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 08:42:51,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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 30 [2021-08-26 08:42:51,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:42:51,927 INFO L225 Difference]: With dead ends: 280 [2021-08-26 08:42:51,927 INFO L226 Difference]: Without dead ends: 278 [2021-08-26 08:42:51,927 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 46.1ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-26 08:42:51,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-08-26 08:42:51,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 100. [2021-08-26 08:42:51,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.3737373737373737) internal successors, (136), 99 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 136 transitions. [2021-08-26 08:42:51,946 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 136 transitions. Word has length 30 [2021-08-26 08:42:51,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:42:51,946 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 136 transitions. [2021-08-26 08:42:51,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,946 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 136 transitions. [2021-08-26 08:42:51,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-26 08:42:51,947 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:51,947 INFO L512 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] [2021-08-26 08:42:51,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-26 08:42:51,947 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:51,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:51,948 INFO L82 PathProgramCache]: Analyzing trace with hash 72774503, now seen corresponding path program 1 times [2021-08-26 08:42:51,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:51,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528652481] [2021-08-26 08:42:51,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:51,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:42:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:42:52,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:42:52,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528652481] [2021-08-26 08:42:52,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528652481] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:42:52,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:42:52,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 08:42:52,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118771855] [2021-08-26 08:42:52,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 08:42:52,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:42:52,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 08:42:52,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 08:42:52,049 INFO L87 Difference]: Start difference. First operand 100 states and 136 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:42:52,125 INFO L93 Difference]: Finished difference Result 276 states and 374 transitions. [2021-08-26 08:42:52,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 08:42:52,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 30 [2021-08-26 08:42:52,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:42:52,126 INFO L225 Difference]: With dead ends: 276 [2021-08-26 08:42:52,126 INFO L226 Difference]: Without dead ends: 182 [2021-08-26 08:42:52,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 61.1ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-08-26 08:42:52,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-08-26 08:42:52,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 104. [2021-08-26 08:42:52,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.3592233009708738) internal successors, (140), 103 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 140 transitions. [2021-08-26 08:42:52,133 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 140 transitions. Word has length 30 [2021-08-26 08:42:52,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:42:52,134 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 140 transitions. [2021-08-26 08:42:52,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,134 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 140 transitions. [2021-08-26 08:42:52,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-26 08:42:52,134 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:52,134 INFO L512 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] [2021-08-26 08:42:52,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-26 08:42:52,135 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:52,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:52,135 INFO L82 PathProgramCache]: Analyzing trace with hash 330939941, now seen corresponding path program 1 times [2021-08-26 08:42:52,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:52,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685441061] [2021-08-26 08:42:52,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:52,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:42:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:42:52,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:42:52,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685441061] [2021-08-26 08:42:52,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685441061] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:42:52,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:42:52,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 08:42:52,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065913705] [2021-08-26 08:42:52,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 08:42:52,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:42:52,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 08:42:52,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:42:52,165 INFO L87 Difference]: Start difference. First operand 104 states and 140 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:42:52,184 INFO L93 Difference]: Finished difference Result 250 states and 336 transitions. [2021-08-26 08:42:52,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 08:42:52,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 30 [2021-08-26 08:42:52,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:42:52,185 INFO L225 Difference]: With dead ends: 250 [2021-08-26 08:42:52,185 INFO L226 Difference]: Without dead ends: 152 [2021-08-26 08:42:52,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:42:52,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-08-26 08:42:52,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-08-26 08:42:52,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.3112582781456954) internal successors, (198), 151 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 198 transitions. [2021-08-26 08:42:52,193 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 198 transitions. Word has length 30 [2021-08-26 08:42:52,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:42:52,194 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 198 transitions. [2021-08-26 08:42:52,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,194 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 198 transitions. [2021-08-26 08:42:52,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-26 08:42:52,195 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:52,195 INFO L512 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] [2021-08-26 08:42:52,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-26 08:42:52,195 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:52,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:52,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1676876253, now seen corresponding path program 1 times [2021-08-26 08:42:52,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:52,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407404046] [2021-08-26 08:42:52,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:52,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 08:42:52,229 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 08:42:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 08:42:52,279 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 08:42:52,279 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 08:42:52,280 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 08:42:52,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 08:42:52,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 08:42:52,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-26 08:42:52,285 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 08:42:52,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 08:42:52 BoogieIcfgContainer [2021-08-26 08:42:52,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 08:42:52,380 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 08:42:52,380 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 08:42:52,381 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 08:42:52,381 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:42:50" (3/4) ... [2021-08-26 08:42:52,382 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-26 08:42:52,485 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 08:42:52,500 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 08:42:52,502 INFO L168 Benchmark]: Toolchain (without parser) took 2812.44 ms. Allocated memory was 48.2 MB in the beginning and 107.0 MB in the end (delta: 58.7 MB). Free memory was 23.5 MB in the beginning and 68.2 MB in the end (delta: -44.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-08-26 08:42:52,502 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 48.2 MB. Free memory was 30.7 MB in the beginning and 30.6 MB in the end (delta: 45.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 08:42:52,503 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.33 ms. Allocated memory was 48.2 MB in the beginning and 65.0 MB in the end (delta: 16.8 MB). Free memory was 23.3 MB in the beginning and 40.0 MB in the end (delta: -16.7 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-08-26 08:42:52,503 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.75 ms. Allocated memory is still 65.0 MB. Free memory was 40.0 MB in the beginning and 37.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 08:42:52,503 INFO L168 Benchmark]: Boogie Preprocessor took 41.89 ms. Allocated memory is still 65.0 MB. Free memory was 37.1 MB in the beginning and 35.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 08:42:52,503 INFO L168 Benchmark]: RCFGBuilder took 739.77 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 35.0 MB in the beginning and 57.1 MB in the end (delta: -22.1 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2021-08-26 08:42:52,504 INFO L168 Benchmark]: TraceAbstraction took 1497.79 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 56.8 MB in the beginning and 80.8 MB in the end (delta: -23.9 MB). Peak memory consumption was 50.5 MB. Max. memory is 16.1 GB. [2021-08-26 08:42:52,504 INFO L168 Benchmark]: Witness Printer took 120.20 ms. Allocated memory is still 107.0 MB. Free memory was 80.8 MB in the beginning and 68.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 08:42:52,505 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 48.2 MB. Free memory was 30.7 MB in the beginning and 30.6 MB in the end (delta: 45.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 343.33 ms. Allocated memory was 48.2 MB in the beginning and 65.0 MB in the end (delta: 16.8 MB). Free memory was 23.3 MB in the beginning and 40.0 MB in the end (delta: -16.7 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.75 ms. Allocated memory is still 65.0 MB. Free memory was 40.0 MB in the beginning and 37.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.89 ms. Allocated memory is still 65.0 MB. Free memory was 37.1 MB in the beginning and 35.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 739.77 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 35.0 MB in the beginning and 57.1 MB in the end (delta: -22.1 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1497.79 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 56.8 MB in the beginning and 80.8 MB in the end (delta: -23.9 MB). Peak memory consumption was 50.5 MB. Max. memory is 16.1 GB. * Witness Printer took 120.20 ms. Allocated memory is still 107.0 MB. Free memory was 80.8 MB in the beginning and 68.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 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: 516]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L315] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L526] int waterLevel = 1; [L527] int methaneLevelCritical = 0; [L691] int pumpRunning = 0; [L692] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L123] int retValue_acc ; [L124] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L904] int retValue_acc ; [L907] retValue_acc = 1 [L908] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L622] int splverifierCounter ; [L623] int tmp ; [L624] int tmp___0 ; [L625] int tmp___1 ; [L626] int tmp___2 ; [L629] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L631] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L633] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L639] tmp = __VERIFIER_nondet_int() [L641] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L544] COND TRUE waterLevel < 2 [L545] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L649] tmp___0 = __VERIFIER_nondet_int() [L651] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L556] COND FALSE !(\read(methaneLevelCritical)) [L559] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L659] tmp___2 = __VERIFIER_nondet_int() [L661] COND TRUE \read(tmp___2) [L847] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L699] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L706] COND TRUE \read(systemActive) [L728] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L731] COND TRUE ! pumpRunning [L825] int retValue_acc ; [L826] int tmp ; [L827] int tmp___0 ; [L606] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L609] COND FALSE !(waterLevel < 2) [L613] retValue_acc = 0 [L614] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L831] tmp = isHighWaterSensorDry() [L833] COND FALSE !(\read(tmp)) [L836] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L838] retValue_acc = tmp___0 [L839] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L733] tmp = isHighWaterLevel() [L735] COND TRUE \read(tmp) [L756] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L853] int tmp ; [L854] int tmp___0 ; [L565] int retValue_acc ; [L568] retValue_acc = methaneLevelCritical [L569] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L858] tmp = isMethaneLevelCritical() [L860] COND TRUE \read(tmp) [L780] int retValue_acc ; [L783] retValue_acc = pumpRunning [L784] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L862] tmp___0 = isPumpRunning() [L864] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L516] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - UnprovableResult [Line: 516]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 516]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 78 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1366.1ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 11.2ms, AutomataDifference: 448.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 575 SDtfs, 881 SDslu, 774 SDs, 0 SdLazy, 107 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 115.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 228.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=9, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 84.4ms AutomataMinimizationTime, 9 MinimizatonAttempts, 414 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 31.9ms SsaConstructionTime, 192.8ms SatisfiabilityAnalysisTime, 410.4ms InterpolantComputationTime, 257 NumberOfCodeBlocks, 257 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 217 ConstructedInterpolants, 0 QuantifiedInterpolants, 421 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! [2021-08-26 08:42:52,534 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...