./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec4_product39.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 944b52f1c750b2b149a29532cc6e317483d681a8 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 01:44:09,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:44:09,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:44:09,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:44:09,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:44:09,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:44:09,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:44:09,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:44:09,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:44:09,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:44:09,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:44:09,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:44:09,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:44:09,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:44:09,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:44:09,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:44:09,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:44:09,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:44:09,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:44:09,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:44:09,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:44:09,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:44:09,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:44:09,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:44:09,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:44:09,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:44:09,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:44:09,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:44:09,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:44:09,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:44:09,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:44:09,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:44:09,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:44:09,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:44:09,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:44:09,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:44:09,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:44:09,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:44:09,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:44:09,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:44:09,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:44:09,849 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:44:09,880 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:44:09,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:44:09,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:44:09,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:44:09,883 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:44:09,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:44:09,883 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:44:09,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:44:09,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:44:09,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:44:09,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:44:09,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:44:09,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:44:09,886 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:44:09,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:44:09,887 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:44:09,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:44:09,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:44:09,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:44:09,888 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:44:09,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:44:09,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:44:09,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:44:09,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:44:09,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:44:09,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:44:09,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:44:09,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:44:09,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:44:09,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 944b52f1c750b2b149a29532cc6e317483d681a8 [2020-10-20 01:44:10,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:44:10,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:44:10,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:44:10,150 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:44:10,150 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:44:10,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2020-10-20 01:44:10,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fac0f849/de7f119b64ee4fd89844c603f782881f/FLAG046f7e49b [2020-10-20 01:44:10,781 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:44:10,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2020-10-20 01:44:10,796 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fac0f849/de7f119b64ee4fd89844c603f782881f/FLAG046f7e49b [2020-10-20 01:44:11,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fac0f849/de7f119b64ee4fd89844c603f782881f [2020-10-20 01:44:11,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:44:11,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:44:11,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:44:11,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:44:11,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:44:11,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:44:11" (1/1) ... [2020-10-20 01:44:11,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d3cbc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:11, skipping insertion in model container [2020-10-20 01:44:11,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:44:11" (1/1) ... [2020-10-20 01:44:11,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:44:11,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:44:11,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:44:11,598 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:44:11,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:44:11,776 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:44:11,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:11 WrapperNode [2020-10-20 01:44:11,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:44:11,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:44:11,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:44:11,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:44:11,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:11" (1/1) ... [2020-10-20 01:44:11,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:11" (1/1) ... [2020-10-20 01:44:11,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:44:11,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:44:11,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:44:11,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:44:11,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:11" (1/1) ... [2020-10-20 01:44:11,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:11" (1/1) ... [2020-10-20 01:44:11,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:11" (1/1) ... [2020-10-20 01:44:11,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:11" (1/1) ... [2020-10-20 01:44:11,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:11" (1/1) ... [2020-10-20 01:44:11,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:11" (1/1) ... [2020-10-20 01:44:11,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:11" (1/1) ... [2020-10-20 01:44:11,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:44:11,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:44:11,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:44:11,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:44:11,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:44:11,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:44:11,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:44:11,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:44:11,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:44:13,019 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:44:13,019 INFO L298 CfgBuilder]: Removed 166 assume(true) statements. [2020-10-20 01:44:13,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:44:13 BoogieIcfgContainer [2020-10-20 01:44:13,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:44:13,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:44:13,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:44:13,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:44:13,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:44:11" (1/3) ... [2020-10-20 01:44:13,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d10dd08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:44:13, skipping insertion in model container [2020-10-20 01:44:13,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:11" (2/3) ... [2020-10-20 01:44:13,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d10dd08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:44:13, skipping insertion in model container [2020-10-20 01:44:13,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:44:13" (3/3) ... [2020-10-20 01:44:13,030 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2020-10-20 01:44:13,043 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:44:13,052 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:44:13,068 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:44:13,099 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:44:13,099 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:44:13,100 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:44:13,101 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:44:13,102 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:44:13,102 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:44:13,103 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:44:13,103 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:44:13,125 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-10-20 01:44:13,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 01:44:13,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:13,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:13,132 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:13,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:13,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1368208383, now seen corresponding path program 1 times [2020-10-20 01:44:13,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:13,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551806479] [2020-10-20 01:44:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:13,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:13,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551806479] [2020-10-20 01:44:13,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:13,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:44:13,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269399492] [2020-10-20 01:44:13,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:44:13,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:13,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:44:13,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:44:13,434 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 2 states. [2020-10-20 01:44:13,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:13,481 INFO L93 Difference]: Finished difference Result 223 states and 338 transitions. [2020-10-20 01:44:13,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:44:13,482 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-20 01:44:13,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:13,502 INFO L225 Difference]: With dead ends: 223 [2020-10-20 01:44:13,503 INFO L226 Difference]: Without dead ends: 109 [2020-10-20 01:44:13,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:44:13,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-20 01:44:13,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-20 01:44:13,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-20 01:44:13,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2020-10-20 01:44:13,554 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2020-10-20 01:44:13,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:13,555 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2020-10-20 01:44:13,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:44:13,555 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2020-10-20 01:44:13,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:44:13,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:13,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:13,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:44:13,557 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:13,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:13,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1880002016, now seen corresponding path program 1 times [2020-10-20 01:44:13,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:13,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807835632] [2020-10-20 01:44:13,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:13,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807835632] [2020-10-20 01:44:13,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:13,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:44:13,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776610511] [2020-10-20 01:44:13,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:44:13,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:13,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:44:13,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:13,702 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 3 states. [2020-10-20 01:44:13,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:13,729 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2020-10-20 01:44:13,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:44:13,730 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 01:44:13,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:13,731 INFO L225 Difference]: With dead ends: 109 [2020-10-20 01:44:13,732 INFO L226 Difference]: Without dead ends: 47 [2020-10-20 01:44:13,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:13,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-20 01:44:13,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-20 01:44:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-20 01:44:13,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2020-10-20 01:44:13,739 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2020-10-20 01:44:13,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:13,740 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2020-10-20 01:44:13,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:44:13,740 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2020-10-20 01:44:13,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 01:44:13,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:13,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:13,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:44:13,742 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:13,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:13,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1744081540, now seen corresponding path program 1 times [2020-10-20 01:44:13,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:13,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301704431] [2020-10-20 01:44:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:13,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301704431] [2020-10-20 01:44:13,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:13,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:44:13,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449151887] [2020-10-20 01:44:13,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:44:13,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:13,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:44:13,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:44:13,864 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 6 states. [2020-10-20 01:44:14,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:14,050 INFO L93 Difference]: Finished difference Result 152 states and 226 transitions. [2020-10-20 01:44:14,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:44:14,051 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-20 01:44:14,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:14,052 INFO L225 Difference]: With dead ends: 152 [2020-10-20 01:44:14,053 INFO L226 Difference]: Without dead ends: 111 [2020-10-20 01:44:14,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:44:14,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-20 01:44:14,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 66. [2020-10-20 01:44:14,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-20 01:44:14,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2020-10-20 01:44:14,065 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 22 [2020-10-20 01:44:14,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:14,066 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2020-10-20 01:44:14,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:44:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2020-10-20 01:44:14,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 01:44:14,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:14,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:14,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:44:14,068 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:14,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:14,069 INFO L82 PathProgramCache]: Analyzing trace with hash -595366227, now seen corresponding path program 1 times [2020-10-20 01:44:14,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:14,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694616824] [2020-10-20 01:44:14,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:14,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694616824] [2020-10-20 01:44:14,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:14,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:44:14,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827621594] [2020-10-20 01:44:14,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:44:14,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:14,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:44:14,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:14,199 INFO L87 Difference]: Start difference. First operand 66 states and 97 transitions. Second operand 3 states. [2020-10-20 01:44:14,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:14,245 INFO L93 Difference]: Finished difference Result 147 states and 218 transitions. [2020-10-20 01:44:14,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:44:14,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-20 01:44:14,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:14,247 INFO L225 Difference]: With dead ends: 147 [2020-10-20 01:44:14,247 INFO L226 Difference]: Without dead ends: 87 [2020-10-20 01:44:14,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:14,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-20 01:44:14,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-10-20 01:44:14,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-20 01:44:14,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2020-10-20 01:44:14,261 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 24 [2020-10-20 01:44:14,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:14,261 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2020-10-20 01:44:14,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:44:14,262 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2020-10-20 01:44:14,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 01:44:14,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:14,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:14,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:44:14,264 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:14,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:14,264 INFO L82 PathProgramCache]: Analyzing trace with hash 566175321, now seen corresponding path program 1 times [2020-10-20 01:44:14,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:14,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418866794] [2020-10-20 01:44:14,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:14,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:14,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418866794] [2020-10-20 01:44:14,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:14,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:44:14,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239870065] [2020-10-20 01:44:14,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:44:14,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:14,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:44:14,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:14,361 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand 5 states. [2020-10-20 01:44:14,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:14,469 INFO L93 Difference]: Finished difference Result 301 states and 436 transitions. [2020-10-20 01:44:14,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:44:14,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-20 01:44:14,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:14,473 INFO L225 Difference]: With dead ends: 301 [2020-10-20 01:44:14,473 INFO L226 Difference]: Without dead ends: 222 [2020-10-20 01:44:14,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:44:14,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-20 01:44:14,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 144. [2020-10-20 01:44:14,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-20 01:44:14,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 200 transitions. [2020-10-20 01:44:14,496 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 200 transitions. Word has length 25 [2020-10-20 01:44:14,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:14,496 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 200 transitions. [2020-10-20 01:44:14,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:44:14,497 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 200 transitions. [2020-10-20 01:44:14,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 01:44:14,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:14,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:14,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:44:14,499 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:14,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:14,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1393133669, now seen corresponding path program 1 times [2020-10-20 01:44:14,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:14,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254645841] [2020-10-20 01:44:14,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:14,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:14,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254645841] [2020-10-20 01:44:14,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:14,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:44:14,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797931059] [2020-10-20 01:44:14,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:44:14,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:14,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:44:14,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:14,591 INFO L87 Difference]: Start difference. First operand 144 states and 200 transitions. Second operand 5 states. [2020-10-20 01:44:14,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:14,734 INFO L93 Difference]: Finished difference Result 297 states and 421 transitions. [2020-10-20 01:44:14,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:44:14,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-20 01:44:14,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:14,738 INFO L225 Difference]: With dead ends: 297 [2020-10-20 01:44:14,739 INFO L226 Difference]: Without dead ends: 295 [2020-10-20 01:44:14,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:44:14,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-20 01:44:14,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 144. [2020-10-20 01:44:14,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-20 01:44:14,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 198 transitions. [2020-10-20 01:44:14,793 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 198 transitions. Word has length 26 [2020-10-20 01:44:14,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:14,793 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 198 transitions. [2020-10-20 01:44:14,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:44:14,793 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 198 transitions. [2020-10-20 01:44:14,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:44:14,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:14,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:14,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:44:14,796 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:14,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:14,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1756729668, now seen corresponding path program 1 times [2020-10-20 01:44:14,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:14,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428335511] [2020-10-20 01:44:14,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:14,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:14,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428335511] [2020-10-20 01:44:14,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:14,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:44:14,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130125627] [2020-10-20 01:44:14,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:44:14,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:14,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:44:14,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:44:14,925 INFO L87 Difference]: Start difference. First operand 144 states and 198 transitions. Second operand 4 states. [2020-10-20 01:44:15,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:15,144 INFO L93 Difference]: Finished difference Result 295 states and 413 transitions. [2020-10-20 01:44:15,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 01:44:15,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-20 01:44:15,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:15,146 INFO L225 Difference]: With dead ends: 295 [2020-10-20 01:44:15,147 INFO L226 Difference]: Without dead ends: 216 [2020-10-20 01:44:15,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:44:15,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-20 01:44:15,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2020-10-20 01:44:15,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-20 01:44:15,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 293 transitions. [2020-10-20 01:44:15,179 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 293 transitions. Word has length 31 [2020-10-20 01:44:15,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:15,181 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 293 transitions. [2020-10-20 01:44:15,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:44:15,182 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 293 transitions. [2020-10-20 01:44:15,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:44:15,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:15,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:15,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 01:44:15,191 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:15,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:15,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1498564230, now seen corresponding path program 1 times [2020-10-20 01:44:15,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:15,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38638291] [2020-10-20 01:44:15,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:15,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:15,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38638291] [2020-10-20 01:44:15,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:15,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:44:15,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649124282] [2020-10-20 01:44:15,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:44:15,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:15,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:44:15,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:44:15,264 INFO L87 Difference]: Start difference. First operand 213 states and 293 transitions. Second operand 4 states. [2020-10-20 01:44:15,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:15,343 INFO L93 Difference]: Finished difference Result 635 states and 886 transitions. [2020-10-20 01:44:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:44:15,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-20 01:44:15,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:15,347 INFO L225 Difference]: With dead ends: 635 [2020-10-20 01:44:15,347 INFO L226 Difference]: Without dead ends: 486 [2020-10-20 01:44:15,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:15,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-10-20 01:44:15,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 213. [2020-10-20 01:44:15,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-20 01:44:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 291 transitions. [2020-10-20 01:44:15,370 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 291 transitions. Word has length 31 [2020-10-20 01:44:15,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:15,371 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 291 transitions. [2020-10-20 01:44:15,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:44:15,371 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 291 transitions. [2020-10-20 01:44:15,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:44:15,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:15,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:15,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 01:44:15,373 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:15,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:15,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1891591240, now seen corresponding path program 1 times [2020-10-20 01:44:15,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:15,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223876239] [2020-10-20 01:44:15,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:15,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:15,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223876239] [2020-10-20 01:44:15,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:15,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:44:15,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974309151] [2020-10-20 01:44:15,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:44:15,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:15,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:44:15,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:15,451 INFO L87 Difference]: Start difference. First operand 213 states and 291 transitions. Second operand 5 states. [2020-10-20 01:44:15,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:15,637 INFO L93 Difference]: Finished difference Result 460 states and 638 transitions. [2020-10-20 01:44:15,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:44:15,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-20 01:44:15,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:15,640 INFO L225 Difference]: With dead ends: 460 [2020-10-20 01:44:15,641 INFO L226 Difference]: Without dead ends: 311 [2020-10-20 01:44:15,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:44:15,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-20 01:44:15,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 239. [2020-10-20 01:44:15,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-20 01:44:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 329 transitions. [2020-10-20 01:44:15,664 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 329 transitions. Word has length 31 [2020-10-20 01:44:15,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:15,665 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 329 transitions. [2020-10-20 01:44:15,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:44:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 329 transitions. [2020-10-20 01:44:15,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-20 01:44:15,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:15,682 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:15,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 01:44:15,683 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:15,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:15,684 INFO L82 PathProgramCache]: Analyzing trace with hash 728455000, now seen corresponding path program 1 times [2020-10-20 01:44:15,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:15,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113580391] [2020-10-20 01:44:15,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:15,743 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 01:44:15,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113580391] [2020-10-20 01:44:15,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:15,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:44:15,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812127680] [2020-10-20 01:44:15,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:44:15,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:15,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:44:15,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:15,745 INFO L87 Difference]: Start difference. First operand 239 states and 329 transitions. Second operand 5 states. [2020-10-20 01:44:15,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:15,849 INFO L93 Difference]: Finished difference Result 733 states and 1010 transitions. [2020-10-20 01:44:15,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:44:15,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-10-20 01:44:15,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:15,853 INFO L225 Difference]: With dead ends: 733 [2020-10-20 01:44:15,854 INFO L226 Difference]: Without dead ends: 500 [2020-10-20 01:44:15,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:44:15,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-10-20 01:44:15,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 248. [2020-10-20 01:44:15,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-20 01:44:15,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 338 transitions. [2020-10-20 01:44:15,896 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 338 transitions. Word has length 49 [2020-10-20 01:44:15,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:15,896 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 338 transitions. [2020-10-20 01:44:15,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:44:15,897 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 338 transitions. [2020-10-20 01:44:15,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-20 01:44:15,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:15,898 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:15,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 01:44:15,899 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:15,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:15,899 INFO L82 PathProgramCache]: Analyzing trace with hash 2114658394, now seen corresponding path program 1 times [2020-10-20 01:44:15,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:15,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276163914] [2020-10-20 01:44:15,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:15,977 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 01:44:15,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276163914] [2020-10-20 01:44:15,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:15,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 01:44:15,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651842005] [2020-10-20 01:44:15,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:44:15,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:15,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:44:15,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:44:15,981 INFO L87 Difference]: Start difference. First operand 248 states and 338 transitions. Second operand 6 states. [2020-10-20 01:44:16,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:16,249 INFO L93 Difference]: Finished difference Result 584 states and 796 transitions. [2020-10-20 01:44:16,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:44:16,250 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-10-20 01:44:16,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:16,252 INFO L225 Difference]: With dead ends: 584 [2020-10-20 01:44:16,252 INFO L226 Difference]: Without dead ends: 342 [2020-10-20 01:44:16,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:44:16,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-20 01:44:16,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 216. [2020-10-20 01:44:16,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-20 01:44:16,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 288 transitions. [2020-10-20 01:44:16,280 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 288 transitions. Word has length 49 [2020-10-20 01:44:16,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:16,280 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 288 transitions. [2020-10-20 01:44:16,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:44:16,281 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 288 transitions. [2020-10-20 01:44:16,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-20 01:44:16,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:16,282 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:16,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 01:44:16,282 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:16,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:16,283 INFO L82 PathProgramCache]: Analyzing trace with hash 451206174, now seen corresponding path program 1 times [2020-10-20 01:44:16,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:16,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2234802] [2020-10-20 01:44:16,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:16,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2234802] [2020-10-20 01:44:16,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703213136] [2020-10-20 01:44:16,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:44:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:16,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 01:44:16,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:44:16,570 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:16,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:44:16,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-20 01:44:16,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837640177] [2020-10-20 01:44:16,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:44:16,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:16,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:44:16,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:44:16,574 INFO L87 Difference]: Start difference. First operand 216 states and 288 transitions. Second operand 6 states. [2020-10-20 01:44:16,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:16,861 INFO L93 Difference]: Finished difference Result 608 states and 825 transitions. [2020-10-20 01:44:16,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:44:16,862 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-20 01:44:16,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:16,865 INFO L225 Difference]: With dead ends: 608 [2020-10-20 01:44:16,865 INFO L226 Difference]: Without dead ends: 446 [2020-10-20 01:44:16,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-20 01:44:16,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-10-20 01:44:16,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 262. [2020-10-20 01:44:16,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-20 01:44:16,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 349 transitions. [2020-10-20 01:44:16,900 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 349 transitions. Word has length 50 [2020-10-20 01:44:16,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:16,901 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 349 transitions. [2020-10-20 01:44:16,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:44:16,901 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 349 transitions. [2020-10-20 01:44:16,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-20 01:44:16,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:16,903 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:17,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-20 01:44:17,119 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:17,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:17,120 INFO L82 PathProgramCache]: Analyzing trace with hash -992737800, now seen corresponding path program 2 times [2020-10-20 01:44:17,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:17,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599430788] [2020-10-20 01:44:17,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:44:17,196 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:44:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:44:17,262 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:44:17,319 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:44:17,320 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:44:17,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-20 01:44:17,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:44:17 BoogieIcfgContainer [2020-10-20 01:44:17,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:44:17,473 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:44:17,473 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:44:17,473 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:44:17,474 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:44:13" (3/4) ... [2020-10-20 01:44:17,477 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:44:17,648 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:44:17,649 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:44:17,652 INFO L168 Benchmark]: Toolchain (without parser) took 6529.44 ms. Allocated memory was 40.9 MB in the beginning and 91.2 MB in the end (delta: 50.3 MB). Free memory was 18.1 MB in the beginning and 67.0 MB in the end (delta: -48.9 MB). Peak memory consumption was 53.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:17,653 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 30.4 MB. Free memory was 6.7 MB in the beginning and 6.6 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 01:44:17,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.90 ms. Allocated memory was 40.9 MB in the beginning and 43.0 MB in the end (delta: 2.1 MB). Free memory was 17.2 MB in the beginning and 19.9 MB in the end (delta: -2.7 MB). Peak memory consumption was 8.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:17,654 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.97 ms. Allocated memory is still 43.0 MB. Free memory was 19.6 MB in the beginning and 15.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:17,655 INFO L168 Benchmark]: Boogie Preprocessor took 49.06 ms. Allocated memory is still 43.0 MB. Free memory was 15.9 MB in the beginning and 12.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:17,655 INFO L168 Benchmark]: RCFGBuilder took 1123.02 ms. Allocated memory was 43.0 MB in the beginning and 49.3 MB in the end (delta: 6.3 MB). Free memory was 12.9 MB in the beginning and 23.1 MB in the end (delta: -10.2 MB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:17,656 INFO L168 Benchmark]: TraceAbstraction took 4449.77 ms. Allocated memory was 49.3 MB in the beginning and 90.2 MB in the end (delta: 40.9 MB). Free memory was 22.7 MB in the beginning and 43.3 MB in the end (delta: -20.5 MB). Peak memory consumption was 44.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:17,657 INFO L168 Benchmark]: Witness Printer took 176.23 ms. Allocated memory was 90.2 MB in the beginning and 91.2 MB in the end (delta: 1.0 MB). Free memory was 43.3 MB in the beginning and 67.0 MB in the end (delta: -23.7 MB). Peak memory consumption was 29.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:17,661 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 30.4 MB. Free memory was 6.7 MB in the beginning and 6.6 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 647.90 ms. Allocated memory was 40.9 MB in the beginning and 43.0 MB in the end (delta: 2.1 MB). Free memory was 17.2 MB in the beginning and 19.9 MB in the end (delta: -2.7 MB). Peak memory consumption was 8.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 70.97 ms. Allocated memory is still 43.0 MB. Free memory was 19.6 MB in the beginning and 15.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 49.06 ms. Allocated memory is still 43.0 MB. Free memory was 15.9 MB in the beginning and 12.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1123.02 ms. Allocated memory was 43.0 MB in the beginning and 49.3 MB in the end (delta: 6.3 MB). Free memory was 12.9 MB in the beginning and 23.1 MB in the end (delta: -10.2 MB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4449.77 ms. Allocated memory was 49.3 MB in the beginning and 90.2 MB in the end (delta: 40.9 MB). Free memory was 22.7 MB in the beginning and 43.3 MB in the end (delta: -20.5 MB). Peak memory consumption was 44.3 MB. Max. memory is 14.3 GB. * Witness Printer took 176.23 ms. Allocated memory was 90.2 MB in the beginning and 91.2 MB in the end (delta: 1.0 MB). Free memory was 43.3 MB in the beginning and 67.0 MB in the end (delta: -23.7 MB). Peak memory consumption was 29.2 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L526] int pumpRunning = 0; [L527] int systemActive = 1; [L730] int waterLevel = 1; [L731] int methaneLevelCritical = 0; [L824] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L897] int retValue_acc ; [L898] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L904] tmp = valid_product() [L906] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L452] int splverifierCounter ; [L453] int tmp ; [L454] int tmp___0 ; [L455] int tmp___1 ; [L456] int tmp___2 ; [L459] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L461] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L463] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L469] tmp = __VERIFIER_nondet_int() [L471] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L748] COND TRUE waterLevel < 2 [L749] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L479] tmp___0 = __VERIFIER_nondet_int() [L481] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L489] tmp___2 = __VERIFIER_nondet_int() [L491] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L534] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L541] COND TRUE \read(systemActive) [L589] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L592] COND FALSE !(\read(pumpRunning)) [L563] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L566] COND TRUE ! pumpRunning [L686] int retValue_acc ; [L687] int tmp ; [L688] int tmp___0 ; [L810] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L813] COND FALSE !(waterLevel < 2) [L817] retValue_acc = 0 [L818] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L692] tmp = isHighWaterSensorDry() [L694] COND FALSE !(\read(tmp)) [L697] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L699] retValue_acc = tmp___0 [L700] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L568] tmp = isHighWaterLevel() [L570] COND TRUE \read(tmp) [L617] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L921] int tmp ; [L922] int tmp___0 ; [L801] int retValue_acc ; [L804] retValue_acc = waterLevel [L805] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L926] tmp = getWaterLevel() [L928] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L461] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L463] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L469] tmp = __VERIFIER_nondet_int() [L471] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L479] tmp___0 = __VERIFIER_nondet_int() [L481] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L489] tmp___2 = __VERIFIER_nondet_int() [L491] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L534] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L736] COND TRUE waterLevel > 0 [L737] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L541] COND TRUE \read(systemActive) [L589] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L592] COND TRUE \read(pumpRunning) [L630] int retValue_acc ; [L769] int retValue_acc ; [L772] retValue_acc = methaneLevelCritical [L773] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L634] retValue_acc = isMethaneLevelCritical() [L636] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L594] tmp = isMethaneAlarm() [L596] COND FALSE !(\read(tmp)) [L563] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L566] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L921] int tmp ; [L922] int tmp___0 ; [L801] int retValue_acc ; [L804] retValue_acc = waterLevel [L805] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L926] tmp = getWaterLevel() [L928] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L461] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L463] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L469] tmp = __VERIFIER_nondet_int() [L471] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L479] tmp___0 = __VERIFIER_nondet_int() [L481] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L489] tmp___2 = __VERIFIER_nondet_int() [L491] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L534] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L736] COND TRUE waterLevel > 0 [L737] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L541] COND TRUE \read(systemActive) [L589] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L592] COND TRUE \read(pumpRunning) [L630] int retValue_acc ; [L769] int retValue_acc ; [L772] retValue_acc = methaneLevelCritical [L773] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L634] retValue_acc = isMethaneLevelCritical() [L636] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L594] tmp = isMethaneAlarm() [L596] COND FALSE !(\read(tmp)) [L563] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L566] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L921] int tmp ; [L922] int tmp___0 ; [L801] int retValue_acc ; [L804] retValue_acc = waterLevel [L805] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L926] tmp = getWaterLevel() [L928] COND TRUE tmp == 0 [L641] int retValue_acc ; [L644] retValue_acc = pumpRunning [L645] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L930] tmp___0 = isPumpRunning() [L932] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L3] __assert_fail("0", "minepump_spec4_product39.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 116 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.2s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1314 SDtfs, 1698 SDslu, 2060 SDs, 0 SdLazy, 309 SolverSat, 70 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 1186 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 490 NumberOfCodeBlocks, 490 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 408 ConstructedInterpolants, 0 QuantifiedInterpolants, 26477 SizeOfPredicates, 4 NumberOfNonLiveVariables, 416 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 50/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...