/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:55:36,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:55:36,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:55:36,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 06:55:36,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:55:36,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:55:36,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:55:36,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:55:36,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:55:36,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:55:36,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:55:36,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:55:36,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:55:36,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:55:36,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:55:36,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:55:36,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:55:36,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:55:36,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:55:36,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:55:36,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:55:36,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:55:36,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:55:36,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:55:36,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:55:36,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:55:36,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:55:36,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:55:36,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:55:36,776 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:55:36,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:55:36,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:55:36,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:55:36,779 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:55:36,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:55:36,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:55:36,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:55:36,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:55:36,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:55:36,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:55:36,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:55:36,781 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:55:36,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:55:36,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:55:36,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:55:36,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:55:36,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:55:36,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:55:36,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:55:36,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:55:36,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:55:36,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:55:36,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:55:36,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:55:36,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:55:37,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:55:37,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:55:37,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:55:37,211 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:55:37,212 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:55:37,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c [2020-12-22 06:55:37,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc5aafc7d/b7ae50f49f954cc1b0cc4502c762ee72/FLAG04a428633 [2020-12-22 06:55:38,074 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:55:38,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c [2020-12-22 06:55:38,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc5aafc7d/b7ae50f49f954cc1b0cc4502c762ee72/FLAG04a428633 [2020-12-22 06:55:38,299 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc5aafc7d/b7ae50f49f954cc1b0cc4502c762ee72 [2020-12-22 06:55:38,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:55:38,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:55:38,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:55:38,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:55:38,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:55:38,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:55:38" (1/1) ... [2020-12-22 06:55:38,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb23e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:38, skipping insertion in model container [2020-12-22 06:55:38,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:55:38" (1/1) ... [2020-12-22 06:55:38,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:55:38,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:55:38,595 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c[3612,3625] [2020-12-22 06:55:38,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:55:38,764 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:55:38,818 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c[3612,3625] [2020-12-22 06:55:38,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:55:38,994 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:55:38,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:38 WrapperNode [2020-12-22 06:55:38,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:55:38,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:55:38,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:55:38,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:55:39,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:38" (1/1) ... [2020-12-22 06:55:39,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:38" (1/1) ... [2020-12-22 06:55:39,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:55:39,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:55:39,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:55:39,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:55:39,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:38" (1/1) ... [2020-12-22 06:55:39,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:38" (1/1) ... [2020-12-22 06:55:39,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:38" (1/1) ... [2020-12-22 06:55:39,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:38" (1/1) ... [2020-12-22 06:55:39,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:38" (1/1) ... [2020-12-22 06:55:39,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:38" (1/1) ... [2020-12-22 06:55:39,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:38" (1/1) ... [2020-12-22 06:55:39,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:55:39,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:55:39,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:55:39,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:55:39,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:38" (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 [2020-12-22 06:55:39,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:55:39,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:55:39,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:55:39,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:55:40,322 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:55:40,322 INFO L299 CfgBuilder]: Removed 168 assume(true) statements. [2020-12-22 06:55:40,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:55:40 BoogieIcfgContainer [2020-12-22 06:55:40,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:55:40,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:55:40,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:55:40,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:55:40,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:55:38" (1/3) ... [2020-12-22 06:55:40,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c59c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:55:40, skipping insertion in model container [2020-12-22 06:55:40,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:38" (2/3) ... [2020-12-22 06:55:40,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c59c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:55:40, skipping insertion in model container [2020-12-22 06:55:40,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:55:40" (3/3) ... [2020-12-22 06:55:40,334 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product40.cil.c [2020-12-22 06:55:40,341 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:55:40,347 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:55:40,367 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:55:40,396 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:55:40,397 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:55:40,397 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:55:40,397 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:55:40,397 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:55:40,398 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:55:40,398 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:55:40,398 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:55:40,417 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2020-12-22 06:55:40,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 06:55:40,425 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:40,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:55:40,426 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:40,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:40,433 INFO L82 PathProgramCache]: Analyzing trace with hash 228795593, now seen corresponding path program 1 times [2020-12-22 06:55:40,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:40,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933692604] [2020-12-22 06:55:40,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:55:40,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933692604] [2020-12-22 06:55:40,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:40,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:55:40,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918303520] [2020-12-22 06:55:40,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:55:40,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:40,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:55:40,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:55:40,828 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 2 states. [2020-12-22 06:55:40,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:40,871 INFO L93 Difference]: Finished difference Result 232 states and 353 transitions. [2020-12-22 06:55:40,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:55:40,873 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-12-22 06:55:40,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:40,902 INFO L225 Difference]: With dead ends: 232 [2020-12-22 06:55:40,902 INFO L226 Difference]: Without dead ends: 115 [2020-12-22 06:55:40,907 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 [2020-12-22 06:55:40,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-22 06:55:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-12-22 06:55:40,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-22 06:55:40,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2020-12-22 06:55:40,993 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 18 [2020-12-22 06:55:40,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:40,993 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2020-12-22 06:55:40,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:55:40,994 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2020-12-22 06:55:40,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 06:55:40,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:40,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:55:41,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:55:41,001 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:41,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:41,003 INFO L82 PathProgramCache]: Analyzing trace with hash 303686568, now seen corresponding path program 1 times [2020-12-22 06:55:41,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:41,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962290321] [2020-12-22 06:55:41,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:41,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:55:41,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962290321] [2020-12-22 06:55:41,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:41,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:55:41,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510806722] [2020-12-22 06:55:41,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:55:41,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:41,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:55:41,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:55:41,281 INFO L87 Difference]: Start difference. First operand 115 states and 168 transitions. Second operand 3 states. [2020-12-22 06:55:41,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:41,311 INFO L93 Difference]: Finished difference Result 115 states and 168 transitions. [2020-12-22 06:55:41,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:55:41,313 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 06:55:41,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:41,315 INFO L225 Difference]: With dead ends: 115 [2020-12-22 06:55:41,316 INFO L226 Difference]: Without dead ends: 49 [2020-12-22 06:55:41,319 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 [2020-12-22 06:55:41,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-22 06:55:41,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-12-22 06:55:41,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 06:55:41,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2020-12-22 06:55:41,332 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 19 [2020-12-22 06:55:41,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:41,333 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2020-12-22 06:55:41,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:55:41,333 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2020-12-22 06:55:41,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 06:55:41,336 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:41,336 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] [2020-12-22 06:55:41,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:55:41,337 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:41,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:41,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1740217190, now seen corresponding path program 1 times [2020-12-22 06:55:41,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:41,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546500973] [2020-12-22 06:55:41,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:41,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:55:41,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546500973] [2020-12-22 06:55:41,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:41,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:55:41,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604991602] [2020-12-22 06:55:41,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:55:41,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:41,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:55:41,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:55:41,441 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand 3 states. [2020-12-22 06:55:41,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:41,484 INFO L93 Difference]: Finished difference Result 135 states and 201 transitions. [2020-12-22 06:55:41,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:55:41,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 06:55:41,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:41,488 INFO L225 Difference]: With dead ends: 135 [2020-12-22 06:55:41,488 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 06:55:41,489 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 [2020-12-22 06:55:41,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 06:55:41,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2020-12-22 06:55:41,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-22 06:55:41,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 131 transitions. [2020-12-22 06:55:41,514 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 131 transitions. Word has length 24 [2020-12-22 06:55:41,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:41,514 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 131 transitions. [2020-12-22 06:55:41,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:55:41,515 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 131 transitions. [2020-12-22 06:55:41,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 06:55:41,517 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:41,517 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] [2020-12-22 06:55:41,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:55:41,519 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:41,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:41,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1869059729, now seen corresponding path program 1 times [2020-12-22 06:55:41,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:41,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193633164] [2020-12-22 06:55:41,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:41,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:55:41,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193633164] [2020-12-22 06:55:41,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:41,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:55:41,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553673222] [2020-12-22 06:55:41,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:55:41,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:41,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:55:41,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:55:41,615 INFO L87 Difference]: Start difference. First operand 88 states and 131 transitions. Second operand 3 states. [2020-12-22 06:55:41,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:41,659 INFO L93 Difference]: Finished difference Result 215 states and 324 transitions. [2020-12-22 06:55:41,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:55:41,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 06:55:41,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:41,661 INFO L225 Difference]: With dead ends: 215 [2020-12-22 06:55:41,662 INFO L226 Difference]: Without dead ends: 133 [2020-12-22 06:55:41,663 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 [2020-12-22 06:55:41,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-22 06:55:41,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-12-22 06:55:41,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-12-22 06:55:41,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 191 transitions. [2020-12-22 06:55:41,679 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 191 transitions. Word has length 26 [2020-12-22 06:55:41,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:41,679 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 191 transitions. [2020-12-22 06:55:41,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:55:41,680 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 191 transitions. [2020-12-22 06:55:41,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 06:55:41,681 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:41,681 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] [2020-12-22 06:55:41,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:55:41,682 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:41,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:41,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1176876603, now seen corresponding path program 1 times [2020-12-22 06:55:41,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:41,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488217135] [2020-12-22 06:55:41,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:41,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:55:41,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488217135] [2020-12-22 06:55:41,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:41,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:55:41,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362056596] [2020-12-22 06:55:41,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:55:41,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:41,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:55:41,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:55:41,811 INFO L87 Difference]: Start difference. First operand 131 states and 191 transitions. Second operand 5 states. [2020-12-22 06:55:42,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:42,007 INFO L93 Difference]: Finished difference Result 691 states and 1025 transitions. [2020-12-22 06:55:42,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:55:42,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-12-22 06:55:42,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:42,013 INFO L225 Difference]: With dead ends: 691 [2020-12-22 06:55:42,013 INFO L226 Difference]: Without dead ends: 566 [2020-12-22 06:55:42,017 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 [2020-12-22 06:55:42,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-12-22 06:55:42,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 222. [2020-12-22 06:55:42,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-12-22 06:55:42,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 314 transitions. [2020-12-22 06:55:42,064 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 314 transitions. Word has length 27 [2020-12-22 06:55:42,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:42,065 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 314 transitions. [2020-12-22 06:55:42,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:55:42,065 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 314 transitions. [2020-12-22 06:55:42,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 06:55:42,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:42,072 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] [2020-12-22 06:55:42,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:55:42,072 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:42,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:42,073 INFO L82 PathProgramCache]: Analyzing trace with hash -523387139, now seen corresponding path program 1 times [2020-12-22 06:55:42,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:42,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760197806] [2020-12-22 06:55:42,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:55:42,174 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:55:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:55:42,255 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:55:42,316 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:55:42,316 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:55:42,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:55:42,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:55:42 BoogieIcfgContainer [2020-12-22 06:55:42,453 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:55:42,454 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:55:42,455 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:55:42,455 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:55:42,455 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:55:40" (3/4) ... [2020-12-22 06:55:42,459 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:55:42,637 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec3_product40.cil.c-witness.graphml [2020-12-22 06:55:42,637 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:55:42,640 INFO L168 Benchmark]: Toolchain (without parser) took 4333.21 ms. Allocated memory was 162.5 MB in the beginning and 201.3 MB in the end (delta: 38.8 MB). Free memory was 136.6 MB in the beginning and 179.4 MB in the end (delta: -42.8 MB). Peak memory consumption was 113.9 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:42,641 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 162.5 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:55:42,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.94 ms. Allocated memory is still 162.5 MB. Free memory was 136.4 MB in the beginning and 115.1 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:42,644 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.24 ms. Allocated memory is still 162.5 MB. Free memory was 115.1 MB in the beginning and 111.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:42,645 INFO L168 Benchmark]: Boogie Preprocessor took 53.38 ms. Allocated memory is still 162.5 MB. Free memory was 111.3 MB in the beginning and 108.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:42,645 INFO L168 Benchmark]: RCFGBuilder took 1194.92 ms. Allocated memory is still 162.5 MB. Free memory was 108.6 MB in the beginning and 82.5 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:42,646 INFO L168 Benchmark]: TraceAbstraction took 2126.56 ms. Allocated memory was 162.5 MB in the beginning and 201.3 MB in the end (delta: 38.8 MB). Free memory was 81.9 MB in the beginning and 79.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 41.4 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:42,647 INFO L168 Benchmark]: Witness Printer took 182.95 ms. Allocated memory is still 201.3 MB. Free memory was 79.4 MB in the beginning and 179.4 MB in the end (delta: -100.0 MB). Peak memory consumption was 16.9 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:42,652 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 162.5 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 687.94 ms. Allocated memory is still 162.5 MB. Free memory was 136.4 MB in the beginning and 115.1 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 78.24 ms. Allocated memory is still 162.5 MB. Free memory was 115.1 MB in the beginning and 111.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.38 ms. Allocated memory is still 162.5 MB. Free memory was 111.3 MB in the beginning and 108.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1194.92 ms. Allocated memory is still 162.5 MB. Free memory was 108.6 MB in the beginning and 82.5 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2126.56 ms. Allocated memory was 162.5 MB in the beginning and 201.3 MB in the end (delta: 38.8 MB). Free memory was 81.9 MB in the beginning and 79.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 41.4 MB. Max. memory is 8.0 GB. * Witness Printer took 182.95 ms. Allocated memory is still 201.3 MB. Free memory was 79.4 MB in the beginning and 179.4 MB in the end (delta: -100.0 MB). Peak memory consumption was 16.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 223]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L231] int waterLevel = 1; [L232] int methaneLevelCritical = 0; [L329] int pumpRunning = 0; [L330] int systemActive = 1; [L768] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; 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] [L172] int retValue_acc ; [L175] retValue_acc = 1 [L176] 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] [L531] int splverifierCounter ; [L532] int tmp ; [L533] int tmp___0 ; [L534] int tmp___1 ; [L535] int tmp___2 ; [L538] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L540] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L542] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L548] tmp = __VERIFIER_nondet_int() [L550] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L249] COND TRUE waterLevel < 2 [L250] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L558] tmp___0 = __VERIFIER_nondet_int() [L560] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L568] tmp___2 = __VERIFIER_nondet_int() [L570] COND FALSE !(\read(tmp___2)) [L576] tmp___1 = __VERIFIER_nondet_int() [L578] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L510] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L517] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L336] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L343] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L186] int tmp ; [L187] int tmp___0 ; [L188] int tmp___1 ; [L270] int retValue_acc ; [L273] retValue_acc = methaneLevelCritical [L274] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L192] tmp = isMethaneLevelCritical() [L194] COND FALSE !(\read(tmp)) [L302] int retValue_acc ; [L305] retValue_acc = waterLevel [L306] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L198] tmp___0 = getWaterLevel() [L200] COND TRUE tmp___0 == 2 [L443] int retValue_acc ; [L446] retValue_acc = pumpRunning [L447] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L202] tmp___1 = isPumpRunning() [L204] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L223] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 119 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 495 SDtfs, 445 SDslu, 382 SDs, 0 SdLazy, 63 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=222occurred in iteration=5, 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, 5 MinimizatonAttempts, 350 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 4653 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...