./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2195b79e9318debfd37e6b0067135f78488fab28 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 01:41:35,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:41:35,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:41:35,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:41:35,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:41:35,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:41:35,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:41:35,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:41:35,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:41:35,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:41:35,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:41:35,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:41:35,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:41:35,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:41:35,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:41:35,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:41:35,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:41:35,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:41:35,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:41:35,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:41:35,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:41:35,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:41:35,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:41:35,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:41:35,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:41:35,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:41:35,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:41:35,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:41:35,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:41:35,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:41:35,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:41:35,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:41:35,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:41:35,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:41:35,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:41:35,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:41:35,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:41:35,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:41:35,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:41:35,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:41:35,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:41:35,846 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:41:35,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:41:35,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:41:35,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:41:35,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:41:35,869 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:41:35,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:41:35,870 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:41:35,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:41:35,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:41:35,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:41:35,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:41:35,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:41:35,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:41:35,871 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:41:35,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:41:35,871 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:41:35,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:41:35,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:41:35,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:41:35,872 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:41:35,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:41:35,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:41:35,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:41:35,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:41:35,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:41:35,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:41:35,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:41:35,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:41:35,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:41:35,874 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 -> 2195b79e9318debfd37e6b0067135f78488fab28 [2020-10-20 01:41:36,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:41:36,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:41:36,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:41:36,116 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:41:36,117 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:41:36,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c [2020-10-20 01:41:36,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/114e6c473/841398ef5e47484ea4b8380012c2555b/FLAG2a1f5611c [2020-10-20 01:41:36,763 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:41:36,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c [2020-10-20 01:41:36,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/114e6c473/841398ef5e47484ea4b8380012c2555b/FLAG2a1f5611c [2020-10-20 01:41:37,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/114e6c473/841398ef5e47484ea4b8380012c2555b [2020-10-20 01:41:37,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:41:37,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:41:37,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:37,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:41:37,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:41:37,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:37" (1/1) ... [2020-10-20 01:41:37,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b06922a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:37, skipping insertion in model container [2020-10-20 01:41:37,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:37" (1/1) ... [2020-10-20 01:41:37,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:41:37,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:41:37,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:37,511 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:41:37,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:37,669 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:41:37,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:37 WrapperNode [2020-10-20 01:41:37,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:37,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:37,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:41:37,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:41:37,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:37" (1/1) ... [2020-10-20 01:41:37,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:37" (1/1) ... [2020-10-20 01:41:37,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:37,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:41:37,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:41:37,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:41:37,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:37" (1/1) ... [2020-10-20 01:41:37,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:37" (1/1) ... [2020-10-20 01:41:37,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:37" (1/1) ... [2020-10-20 01:41:37,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:37" (1/1) ... [2020-10-20 01:41:37,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:37" (1/1) ... [2020-10-20 01:41:37,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:37" (1/1) ... [2020-10-20 01:41:37,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:37" (1/1) ... [2020-10-20 01:41:37,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:41:37,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:41:37,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:41:37,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:41:37,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:41:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:41:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:41:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:41:37,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:41:38,766 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:41:38,767 INFO L298 CfgBuilder]: Removed 104 assume(true) statements. [2020-10-20 01:41:38,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:38 BoogieIcfgContainer [2020-10-20 01:41:38,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:41:38,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:41:38,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:41:38,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:41:38,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:41:37" (1/3) ... [2020-10-20 01:41:38,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9370e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:41:38, skipping insertion in model container [2020-10-20 01:41:38,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:37" (2/3) ... [2020-10-20 01:41:38,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9370e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:41:38, skipping insertion in model container [2020-10-20 01:41:38,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:38" (3/3) ... [2020-10-20 01:41:38,779 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2020-10-20 01:41:38,791 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:41:38,799 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:41:38,814 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:41:38,841 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:41:38,842 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:41:38,842 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:41:38,842 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:41:38,843 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:41:38,843 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:41:38,843 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:41:38,844 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:41:38,863 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2020-10-20 01:41:38,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 01:41:38,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:38,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:38,873 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:38,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:38,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1558904107, now seen corresponding path program 1 times [2020-10-20 01:41:38,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:38,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459560399] [2020-10-20 01:41:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:39,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:39,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459560399] [2020-10-20 01:41:39,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:39,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:39,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546603039] [2020-10-20 01:41:39,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:41:39,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:39,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:41:39,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:41:39,179 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 2 states. [2020-10-20 01:41:39,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:39,226 INFO L93 Difference]: Finished difference Result 153 states and 230 transitions. [2020-10-20 01:41:39,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:41:39,228 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-20 01:41:39,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:39,244 INFO L225 Difference]: With dead ends: 153 [2020-10-20 01:41:39,244 INFO L226 Difference]: Without dead ends: 74 [2020-10-20 01:41:39,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:41:39,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-20 01:41:39,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-20 01:41:39,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-20 01:41:39,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2020-10-20 01:41:39,298 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2020-10-20 01:41:39,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:39,300 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2020-10-20 01:41:39,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:41:39,301 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2020-10-20 01:41:39,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:41:39,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:39,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:39,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:41:39,303 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:39,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:39,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1073231156, now seen corresponding path program 1 times [2020-10-20 01:41:39,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:39,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918807334] [2020-10-20 01:41:39,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:39,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918807334] [2020-10-20 01:41:39,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:39,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:41:39,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492267363] [2020-10-20 01:41:39,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:39,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:39,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:39,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:39,458 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 3 states. [2020-10-20 01:41:39,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:39,470 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2020-10-20 01:41:39,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:39,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 01:41:39,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:39,472 INFO L225 Difference]: With dead ends: 74 [2020-10-20 01:41:39,472 INFO L226 Difference]: Without dead ends: 34 [2020-10-20 01:41:39,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:39,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-20 01:41:39,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-20 01:41:39,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-20 01:41:39,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2020-10-20 01:41:39,478 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2020-10-20 01:41:39,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:39,479 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2020-10-20 01:41:39,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:39,479 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2020-10-20 01:41:39,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 01:41:39,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:39,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:39,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:41:39,481 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:39,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:39,481 INFO L82 PathProgramCache]: Analyzing trace with hash -964945646, now seen corresponding path program 1 times [2020-10-20 01:41:39,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:39,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946454455] [2020-10-20 01:41:39,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:39,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:39,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946454455] [2020-10-20 01:41:39,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:39,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:41:39,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240643928] [2020-10-20 01:41:39,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:39,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:39,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:39,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:39,613 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 3 states. [2020-10-20 01:41:39,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:39,641 INFO L93 Difference]: Finished difference Result 62 states and 90 transitions. [2020-10-20 01:41:39,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:39,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-20 01:41:39,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:39,642 INFO L225 Difference]: With dead ends: 62 [2020-10-20 01:41:39,643 INFO L226 Difference]: Without dead ends: 34 [2020-10-20 01:41:39,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:39,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-20 01:41:39,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-20 01:41:39,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-20 01:41:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2020-10-20 01:41:39,649 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 22 [2020-10-20 01:41:39,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:39,650 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2020-10-20 01:41:39,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:39,650 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2020-10-20 01:41:39,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 01:41:39,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:39,651 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] [2020-10-20 01:41:39,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:41:39,651 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:39,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:39,652 INFO L82 PathProgramCache]: Analyzing trace with hash -952202930, now seen corresponding path program 1 times [2020-10-20 01:41:39,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:39,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623506218] [2020-10-20 01:41:39,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:39,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:39,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623506218] [2020-10-20 01:41:39,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:39,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:39,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316448399] [2020-10-20 01:41:39,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:39,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:39,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:39,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:39,716 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand 3 states. [2020-10-20 01:41:39,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:39,745 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2020-10-20 01:41:39,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:39,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-20 01:41:39,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:39,747 INFO L225 Difference]: With dead ends: 83 [2020-10-20 01:41:39,747 INFO L226 Difference]: Without dead ends: 55 [2020-10-20 01:41:39,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:39,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-20 01:41:39,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-10-20 01:41:39,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-20 01:41:39,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 74 transitions. [2020-10-20 01:41:39,757 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 74 transitions. Word has length 23 [2020-10-20 01:41:39,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:39,757 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 74 transitions. [2020-10-20 01:41:39,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:39,757 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 74 transitions. [2020-10-20 01:41:39,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-20 01:41:39,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:39,759 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] [2020-10-20 01:41:39,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:41:39,759 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:39,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:39,760 INFO L82 PathProgramCache]: Analyzing trace with hash -2049720417, now seen corresponding path program 1 times [2020-10-20 01:41:39,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:39,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820656988] [2020-10-20 01:41:39,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:39,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:39,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820656988] [2020-10-20 01:41:39,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:39,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:41:39,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81715118] [2020-10-20 01:41:39,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:39,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:39,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:39,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:39,865 INFO L87 Difference]: Start difference. First operand 53 states and 74 transitions. Second operand 5 states. [2020-10-20 01:41:39,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:39,923 INFO L93 Difference]: Finished difference Result 139 states and 194 transitions. [2020-10-20 01:41:39,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:41:39,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-20 01:41:39,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:39,926 INFO L225 Difference]: With dead ends: 139 [2020-10-20 01:41:39,926 INFO L226 Difference]: Without dead ends: 92 [2020-10-20 01:41:39,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:41:39,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-20 01:41:39,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2020-10-20 01:41:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-20 01:41:39,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2020-10-20 01:41:39,937 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 29 [2020-10-20 01:41:39,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:39,938 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2020-10-20 01:41:39,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:39,938 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2020-10-20 01:41:39,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-20 01:41:39,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:39,939 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] [2020-10-20 01:41:39,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:41:39,940 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:39,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:39,941 INFO L82 PathProgramCache]: Analyzing trace with hash 612790626, now seen corresponding path program 1 times [2020-10-20 01:41:39,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:39,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746988487] [2020-10-20 01:41:39,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:40,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:40,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746988487] [2020-10-20 01:41:40,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:40,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:40,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575936505] [2020-10-20 01:41:40,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:40,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:40,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:40,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:40,027 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand 5 states. [2020-10-20 01:41:40,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:40,120 INFO L93 Difference]: Finished difference Result 270 states and 384 transitions. [2020-10-20 01:41:40,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 01:41:40,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-20 01:41:40,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:40,123 INFO L225 Difference]: With dead ends: 270 [2020-10-20 01:41:40,124 INFO L226 Difference]: Without dead ends: 220 [2020-10-20 01:41:40,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:41:40,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-20 01:41:40,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 100. [2020-10-20 01:41:40,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-20 01:41:40,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 137 transitions. [2020-10-20 01:41:40,143 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 137 transitions. Word has length 29 [2020-10-20 01:41:40,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:40,143 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 137 transitions. [2020-10-20 01:41:40,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:40,144 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 137 transitions. [2020-10-20 01:41:40,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 01:41:40,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:40,146 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] [2020-10-20 01:41:40,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:41:40,146 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:40,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:40,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1166654740, now seen corresponding path program 1 times [2020-10-20 01:41:40,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:40,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946381772] [2020-10-20 01:41:40,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:40,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946381772] [2020-10-20 01:41:40,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:40,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:40,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296547368] [2020-10-20 01:41:40,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:40,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:40,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:40,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:40,237 INFO L87 Difference]: Start difference. First operand 100 states and 137 transitions. Second operand 5 states. [2020-10-20 01:41:40,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:40,352 INFO L93 Difference]: Finished difference Result 280 states and 386 transitions. [2020-10-20 01:41:40,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:41:40,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-20 01:41:40,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:40,355 INFO L225 Difference]: With dead ends: 280 [2020-10-20 01:41:40,355 INFO L226 Difference]: Without dead ends: 278 [2020-10-20 01:41:40,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:41:40,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-20 01:41:40,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 100. [2020-10-20 01:41:40,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-20 01:41:40,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 136 transitions. [2020-10-20 01:41:40,373 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 136 transitions. Word has length 30 [2020-10-20 01:41:40,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:40,373 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 136 transitions. [2020-10-20 01:41:40,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:40,374 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 136 transitions. [2020-10-20 01:41:40,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 01:41:40,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:40,375 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] [2020-10-20 01:41:40,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 01:41:40,376 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:40,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:40,376 INFO L82 PathProgramCache]: Analyzing trace with hash 72774503, now seen corresponding path program 1 times [2020-10-20 01:41:40,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:40,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792493046] [2020-10-20 01:41:40,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:40,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:40,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792493046] [2020-10-20 01:41:40,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:40,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:40,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362482897] [2020-10-20 01:41:40,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:41:40,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:40,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:41:40,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:41:40,441 INFO L87 Difference]: Start difference. First operand 100 states and 136 transitions. Second operand 4 states. [2020-10-20 01:41:40,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:40,479 INFO L93 Difference]: Finished difference Result 240 states and 326 transitions. [2020-10-20 01:41:40,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 01:41:40,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-20 01:41:40,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:40,481 INFO L225 Difference]: With dead ends: 240 [2020-10-20 01:41:40,481 INFO L226 Difference]: Without dead ends: 146 [2020-10-20 01:41:40,483 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 01:41:40,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-20 01:41:40,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 104. [2020-10-20 01:41:40,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-20 01:41:40,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 140 transitions. [2020-10-20 01:41:40,511 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 140 transitions. Word has length 30 [2020-10-20 01:41:40,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:40,512 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 140 transitions. [2020-10-20 01:41:40,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:41:40,514 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 140 transitions. [2020-10-20 01:41:40,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 01:41:40,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:40,515 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] [2020-10-20 01:41:40,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 01:41:40,516 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:40,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:40,516 INFO L82 PathProgramCache]: Analyzing trace with hash 330939941, now seen corresponding path program 1 times [2020-10-20 01:41:40,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:40,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083755390] [2020-10-20 01:41:40,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:41:40,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083755390] [2020-10-20 01:41:40,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:40,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:40,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561715943] [2020-10-20 01:41:40,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:40,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:40,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:40,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:40,596 INFO L87 Difference]: Start difference. First operand 104 states and 140 transitions. Second operand 3 states. [2020-10-20 01:41:40,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:40,624 INFO L93 Difference]: Finished difference Result 250 states and 336 transitions. [2020-10-20 01:41:40,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:40,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-20 01:41:40,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:40,626 INFO L225 Difference]: With dead ends: 250 [2020-10-20 01:41:40,626 INFO L226 Difference]: Without dead ends: 152 [2020-10-20 01:41:40,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:40,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-20 01:41:40,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2020-10-20 01:41:40,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-20 01:41:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 198 transitions. [2020-10-20 01:41:40,665 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 198 transitions. Word has length 30 [2020-10-20 01:41:40,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:40,666 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 198 transitions. [2020-10-20 01:41:40,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 198 transitions. [2020-10-20 01:41:40,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:41:40,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:40,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:40,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 01:41:40,673 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:40,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:40,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1676876253, now seen corresponding path program 1 times [2020-10-20 01:41:40,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:40,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712355955] [2020-10-20 01:41:40,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:40,768 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:40,853 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:40,929 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:41:40,930 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:41:40,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 01:41:41,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:41:41 BoogieIcfgContainer [2020-10-20 01:41:41,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:41:41,108 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:41:41,108 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:41:41,108 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:41:41,109 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:38" (3/4) ... [2020-10-20 01:41:41,112 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:41:41,206 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:41:41,206 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:41:41,209 INFO L168 Benchmark]: Toolchain (without parser) took 4136.62 ms. Allocated memory was 41.9 MB in the beginning and 62.9 MB in the end (delta: 21.0 MB). Free memory was 19.9 MB in the beginning and 25.2 MB in the end (delta: -5.4 MB). Peak memory consumption was 15.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:41,209 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 32.0 MB. Free memory was 9.2 MB in the beginning and 9.2 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. [2020-10-20 01:41:41,210 INFO L168 Benchmark]: CACSL2BoogieTranslator took 592.58 ms. Allocated memory was 41.9 MB in the beginning and 44.6 MB in the end (delta: 2.6 MB). Free memory was 19.0 MB in the beginning and 27.1 MB in the end (delta: -8.1 MB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:41,211 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.72 ms. Allocated memory is still 44.6 MB. Free memory was 27.1 MB in the beginning and 23.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:41,211 INFO L168 Benchmark]: Boogie Preprocessor took 38.48 ms. Allocated memory is still 44.6 MB. Free memory was 23.9 MB in the beginning and 21.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:41,212 INFO L168 Benchmark]: RCFGBuilder took 996.17 ms. Allocated memory was 44.6 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Free memory was 21.4 MB in the beginning and 27.4 MB in the end (delta: -6.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:41,212 INFO L168 Benchmark]: TraceAbstraction took 2336.95 ms. Allocated memory was 47.7 MB in the beginning and 62.9 MB in the end (delta: 15.2 MB). Free memory was 27.0 MB in the beginning and 40.6 MB in the end (delta: -13.7 MB). Peak memory consumption was 33.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:41,213 INFO L168 Benchmark]: Witness Printer took 98.21 ms. Allocated memory is still 62.9 MB. Free memory was 40.6 MB in the beginning and 25.2 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:41,216 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 32.0 MB. Free memory was 9.2 MB in the beginning and 9.2 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 592.58 ms. Allocated memory was 41.9 MB in the beginning and 44.6 MB in the end (delta: 2.6 MB). Free memory was 19.0 MB in the beginning and 27.1 MB in the end (delta: -8.1 MB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 63.72 ms. Allocated memory is still 44.6 MB. Free memory was 27.1 MB in the beginning and 23.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 38.48 ms. Allocated memory is still 44.6 MB. Free memory was 23.9 MB in the beginning and 21.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 996.17 ms. Allocated memory was 44.6 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Free memory was 21.4 MB in the beginning and 27.4 MB in the end (delta: -6.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2336.95 ms. Allocated memory was 47.7 MB in the beginning and 62.9 MB in the end (delta: 15.2 MB). Free memory was 27.0 MB in the beginning and 40.6 MB in the end (delta: -13.7 MB). Peak memory consumption was 33.1 MB. Max. memory is 14.3 GB. * Witness Printer took 98.21 ms. Allocated memory is still 62.9 MB. Free memory was 40.6 MB in the beginning and 25.2 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 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: [L42] int cleanupTimeShifts = 4; [L315] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L526] int waterLevel = 1; [L527] int methaneLevelCritical = 0; [L691] int pumpRunning = 0; [L692] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L123] int retValue_acc ; [L124] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L904] int retValue_acc ; [L907] retValue_acc = 1 [L908] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L622] int splverifierCounter ; [L623] int tmp ; [L624] int tmp___0 ; [L625] int tmp___1 ; [L626] int tmp___2 ; [L629] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L631] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L633] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L639] tmp = __VERIFIER_nondet_int() [L641] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L544] COND TRUE waterLevel < 2 [L545] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L649] tmp___0 = __VERIFIER_nondet_int() [L651] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L556] COND FALSE !(\read(methaneLevelCritical)) [L559] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L659] tmp___2 = __VERIFIER_nondet_int() [L661] COND TRUE \read(tmp___2) [L847] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L699] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L706] COND TRUE \read(systemActive) [L728] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L731] COND TRUE ! pumpRunning [L825] int retValue_acc ; [L826] int tmp ; [L827] int tmp___0 ; [L606] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L609] COND FALSE !(waterLevel < 2) [L613] retValue_acc = 0 [L614] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L831] tmp = isHighWaterSensorDry() [L833] COND FALSE !(\read(tmp)) [L836] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L838] retValue_acc = tmp___0 [L839] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L733] tmp = isHighWaterLevel() [L735] COND TRUE \read(tmp) [L756] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L853] int tmp ; [L854] int tmp___0 ; [L565] int retValue_acc ; [L568] retValue_acc = methaneLevelCritical [L569] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L858] tmp = isMethaneLevelCritical() [L860] COND TRUE \read(tmp) [L780] int retValue_acc ; [L783] retValue_acc = pumpRunning [L784] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L862] tmp___0 = isPumpRunning() [L864] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L3] __assert_fail("0", "minepump_spec1_product34.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 81 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 579 SDtfs, 635 SDslu, 752 SDs, 0 SdLazy, 98 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 378 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 257 NumberOfCodeBlocks, 257 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 217 ConstructedInterpolants, 0 QuantifiedInterpolants, 10701 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...