/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_spec1_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:53:33,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:53:33,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:53:33,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 06:53:33,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:53:33,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:53:33,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:53:33,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:53:33,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:53:33,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:53:33,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:53:33,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:53:33,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:53:33,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:53:33,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:53:33,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:53:33,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:53:33,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:53:33,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:53:33,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:53:33,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:53:33,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:53:33,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:53:33,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:53:33,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:53:33,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:53:33,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:53:33,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:53:33,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:53:33,811 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:53:33,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:53:33,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:53:33,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:53:33,814 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:53:33,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:53:33,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:53:33,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:53:33,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:53:33,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:53:33,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:53:33,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:53:33,817 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:53:33,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:53:33,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:53:33,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:53:33,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:53:33,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:53:33,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:53:33,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:53:33,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:53:33,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:53:33,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:53:33,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:53:33,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:53:33,821 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:53:34,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:53:34,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:53:34,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:53:34,264 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:53:34,264 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:53:34,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c [2020-12-22 06:53:34,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665569755/d50b2ce743984e7391f3d7ee9bf47d51/FLAGfde34d5ff [2020-12-22 06:53:35,032 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:53:35,033 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product49.cil.c [2020-12-22 06:53:35,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665569755/d50b2ce743984e7391f3d7ee9bf47d51/FLAGfde34d5ff [2020-12-22 06:53:35,312 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665569755/d50b2ce743984e7391f3d7ee9bf47d51 [2020-12-22 06:53:35,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:53:35,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:53:35,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:53:35,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:53:35,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:53:35,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:53:35" (1/1) ... [2020-12-22 06:53:35,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c69ef71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:35, skipping insertion in model container [2020-12-22 06:53:35,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:53:35" (1/1) ... [2020-12-22 06:53:35,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:53:35,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:53:35,740 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_spec1_product49.cil.c[18106,18119] [2020-12-22 06:53:35,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:53:35,758 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:53:35,860 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_spec1_product49.cil.c[18106,18119] [2020-12-22 06:53:35,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:53:35,906 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:53:35,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:35 WrapperNode [2020-12-22 06:53:35,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:53:35,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:53:35,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:53:35,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:53:35,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:35" (1/1) ... [2020-12-22 06:53:35,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:35" (1/1) ... [2020-12-22 06:53:36,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:53:36,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:53:36,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:53:36,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:53:36,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:35" (1/1) ... [2020-12-22 06:53:36,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:35" (1/1) ... [2020-12-22 06:53:36,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:35" (1/1) ... [2020-12-22 06:53:36,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:35" (1/1) ... [2020-12-22 06:53:36,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:35" (1/1) ... [2020-12-22 06:53:36,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:35" (1/1) ... [2020-12-22 06:53:36,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:35" (1/1) ... [2020-12-22 06:53:36,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:53:36,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:53:36,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:53:36,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:53:36,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:35" (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 06:53:36,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:53:36,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:53:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:53:36,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:53:37,361 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:53:37,362 INFO L299 CfgBuilder]: Removed 156 assume(true) statements. [2020-12-22 06:53:37,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:37 BoogieIcfgContainer [2020-12-22 06:53:37,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:53:37,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:53:37,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:53:37,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:53:37,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:53:35" (1/3) ... [2020-12-22 06:53:37,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38fd5a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:53:37, skipping insertion in model container [2020-12-22 06:53:37,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:35" (2/3) ... [2020-12-22 06:53:37,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38fd5a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:53:37, skipping insertion in model container [2020-12-22 06:53:37,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:37" (3/3) ... [2020-12-22 06:53:37,373 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product49.cil.c [2020-12-22 06:53:37,380 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:53:37,385 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:53:37,404 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:53:37,434 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:53:37,434 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:53:37,434 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:53:37,434 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:53:37,434 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:53:37,435 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:53:37,435 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:53:37,435 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:53:37,454 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states. [2020-12-22 06:53:37,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 06:53:37,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:37,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:37,463 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:37,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:37,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1641629540, now seen corresponding path program 1 times [2020-12-22 06:53:37,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:37,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19051230] [2020-12-22 06:53:37,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:37,813 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 06:53:37,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19051230] [2020-12-22 06:53:37,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:37,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:37,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41714818] [2020-12-22 06:53:37,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:53:37,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:37,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:53:37,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:53:37,848 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 2 states. [2020-12-22 06:53:37,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:37,907 INFO L93 Difference]: Finished difference Result 228 states and 347 transitions. [2020-12-22 06:53:37,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:53:37,908 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-22 06:53:37,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:37,920 INFO L225 Difference]: With dead ends: 228 [2020-12-22 06:53:37,921 INFO L226 Difference]: Without dead ends: 113 [2020-12-22 06:53:37,924 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 06:53:37,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-22 06:53:37,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-12-22 06:53:37,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-12-22 06:53:37,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2020-12-22 06:53:37,973 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 165 transitions. Word has length 16 [2020-12-22 06:53:37,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:37,974 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 165 transitions. [2020-12-22 06:53:37,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:53:37,974 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 165 transitions. [2020-12-22 06:53:37,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 06:53:37,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:37,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:37,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:53:37,976 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:37,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:37,977 INFO L82 PathProgramCache]: Analyzing trace with hash 594872643, now seen corresponding path program 1 times [2020-12-22 06:53:37,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:37,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397082993] [2020-12-22 06:53:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:38,123 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 06:53:38,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397082993] [2020-12-22 06:53:38,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:38,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:53:38,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916428852] [2020-12-22 06:53:38,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:38,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:38,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:38,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:38,132 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. Second operand 3 states. [2020-12-22 06:53:38,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:38,155 INFO L93 Difference]: Finished difference Result 113 states and 165 transitions. [2020-12-22 06:53:38,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:38,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 06:53:38,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:38,157 INFO L225 Difference]: With dead ends: 113 [2020-12-22 06:53:38,157 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 06:53:38,159 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 06:53:38,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 06:53:38,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-22 06:53:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 06:53:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2020-12-22 06:53:38,166 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2020-12-22 06:53:38,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:38,166 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2020-12-22 06:53:38,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:38,166 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2020-12-22 06:53:38,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 06:53:38,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:38,168 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] [2020-12-22 06:53:38,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:53:38,168 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:38,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:38,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1404483435, now seen corresponding path program 1 times [2020-12-22 06:53:38,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:38,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602841572] [2020-12-22 06:53:38,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:38,309 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 06:53:38,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602841572] [2020-12-22 06:53:38,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:38,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:53:38,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182994182] [2020-12-22 06:53:38,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:53:38,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:38,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:53:38,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:53:38,313 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 6 states. [2020-12-22 06:53:38,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:38,536 INFO L93 Difference]: Finished difference Result 88 states and 130 transitions. [2020-12-22 06:53:38,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:53:38,537 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-22 06:53:38,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:38,538 INFO L225 Difference]: With dead ends: 88 [2020-12-22 06:53:38,538 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 06:53:38,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:53:38,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 06:53:38,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-22 06:53:38,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 06:53:38,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 67 transitions. [2020-12-22 06:53:38,550 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 67 transitions. Word has length 22 [2020-12-22 06:53:38,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:38,551 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 67 transitions. [2020-12-22 06:53:38,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:53:38,551 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 67 transitions. [2020-12-22 06:53:38,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 06:53:38,552 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:38,552 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 06:53:38,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:53:38,553 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:38,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:38,557 INFO L82 PathProgramCache]: Analyzing trace with hash -764351347, now seen corresponding path program 1 times [2020-12-22 06:53:38,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:38,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653914136] [2020-12-22 06:53:38,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:38,667 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 06:53:38,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653914136] [2020-12-22 06:53:38,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:38,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:38,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653227293] [2020-12-22 06:53:38,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:38,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:38,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:38,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:38,674 INFO L87 Difference]: Start difference. First operand 47 states and 67 transitions. Second operand 3 states. [2020-12-22 06:53:38,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:38,731 INFO L93 Difference]: Finished difference Result 109 states and 158 transitions. [2020-12-22 06:53:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:38,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 06:53:38,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:38,739 INFO L225 Difference]: With dead ends: 109 [2020-12-22 06:53:38,739 INFO L226 Difference]: Without dead ends: 68 [2020-12-22 06:53:38,740 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 06:53:38,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-22 06:53:38,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-12-22 06:53:38,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 06:53:38,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2020-12-22 06:53:38,751 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 24 [2020-12-22 06:53:38,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:38,751 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2020-12-22 06:53:38,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:38,752 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2020-12-22 06:53:38,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 06:53:38,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:38,753 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] [2020-12-22 06:53:38,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:53:38,753 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:38,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:38,754 INFO L82 PathProgramCache]: Analyzing trace with hash -805303330, now seen corresponding path program 1 times [2020-12-22 06:53:38,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:38,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177398256] [2020-12-22 06:53:38,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:38,822 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 06:53:38,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177398256] [2020-12-22 06:53:38,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:38,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:53:38,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106591826] [2020-12-22 06:53:38,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:38,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:38,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:38,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:38,825 INFO L87 Difference]: Start difference. First operand 66 states and 93 transitions. Second operand 5 states. [2020-12-22 06:53:38,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:38,900 INFO L93 Difference]: Finished difference Result 175 states and 245 transitions. [2020-12-22 06:53:38,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:53:38,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-12-22 06:53:38,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:38,902 INFO L225 Difference]: With dead ends: 175 [2020-12-22 06:53:38,902 INFO L226 Difference]: Without dead ends: 115 [2020-12-22 06:53:38,903 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 [2020-12-22 06:53:38,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-22 06:53:38,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 72. [2020-12-22 06:53:38,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-22 06:53:38,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 99 transitions. [2020-12-22 06:53:38,914 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 99 transitions. Word has length 30 [2020-12-22 06:53:38,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:38,915 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 99 transitions. [2020-12-22 06:53:38,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:38,915 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 99 transitions. [2020-12-22 06:53:38,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 06:53:38,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:38,916 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] [2020-12-22 06:53:38,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:53:38,917 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:38,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:38,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1857207713, now seen corresponding path program 1 times [2020-12-22 06:53:38,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:38,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632796547] [2020-12-22 06:53:38,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:39,021 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 06:53:39,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632796547] [2020-12-22 06:53:39,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:39,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:53:39,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958502608] [2020-12-22 06:53:39,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:39,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:39,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:39,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:39,025 INFO L87 Difference]: Start difference. First operand 72 states and 99 transitions. Second operand 5 states. [2020-12-22 06:53:39,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:39,149 INFO L93 Difference]: Finished difference Result 382 states and 538 transitions. [2020-12-22 06:53:39,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:53:39,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-12-22 06:53:39,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:39,153 INFO L225 Difference]: With dead ends: 382 [2020-12-22 06:53:39,153 INFO L226 Difference]: Without dead ends: 316 [2020-12-22 06:53:39,154 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 [2020-12-22 06:53:39,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-12-22 06:53:39,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 132. [2020-12-22 06:53:39,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-22 06:53:39,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 181 transitions. [2020-12-22 06:53:39,181 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 181 transitions. Word has length 30 [2020-12-22 06:53:39,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:39,182 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 181 transitions. [2020-12-22 06:53:39,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:39,182 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 181 transitions. [2020-12-22 06:53:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:39,185 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:39,185 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] [2020-12-22 06:53:39,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:53:39,185 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:39,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:39,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1765991081, now seen corresponding path program 1 times [2020-12-22 06:53:39,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:39,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415873743] [2020-12-22 06:53:39,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:39,255 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 06:53:39,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415873743] [2020-12-22 06:53:39,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:39,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:53:39,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585806136] [2020-12-22 06:53:39,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:39,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:39,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:39,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:39,258 INFO L87 Difference]: Start difference. First operand 132 states and 181 transitions. Second operand 5 states. [2020-12-22 06:53:39,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:39,393 INFO L93 Difference]: Finished difference Result 378 states and 520 transitions. [2020-12-22 06:53:39,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:53:39,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-22 06:53:39,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:39,397 INFO L225 Difference]: With dead ends: 378 [2020-12-22 06:53:39,397 INFO L226 Difference]: Without dead ends: 376 [2020-12-22 06:53:39,398 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 [2020-12-22 06:53:39,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-12-22 06:53:39,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 132. [2020-12-22 06:53:39,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-22 06:53:39,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 180 transitions. [2020-12-22 06:53:39,418 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 180 transitions. Word has length 31 [2020-12-22 06:53:39,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:39,419 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 180 transitions. [2020-12-22 06:53:39,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:39,419 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 180 transitions. [2020-12-22 06:53:39,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:39,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:39,421 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] [2020-12-22 06:53:39,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:53:39,421 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:39,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:39,422 INFO L82 PathProgramCache]: Analyzing trace with hash -526561838, now seen corresponding path program 1 times [2020-12-22 06:53:39,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:39,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138927714] [2020-12-22 06:53:39,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:39,469 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 06:53:39,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138927714] [2020-12-22 06:53:39,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:39,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:53:39,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082418727] [2020-12-22 06:53:39,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:53:39,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:39,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:53:39,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:53:39,472 INFO L87 Difference]: Start difference. First operand 132 states and 180 transitions. Second operand 4 states. [2020-12-22 06:53:39,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:39,523 INFO L93 Difference]: Finished difference Result 316 states and 428 transitions. [2020-12-22 06:53:39,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:53:39,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-12-22 06:53:39,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:39,525 INFO L225 Difference]: With dead ends: 316 [2020-12-22 06:53:39,526 INFO L226 Difference]: Without dead ends: 190 [2020-12-22 06:53:39,526 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 [2020-12-22 06:53:39,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-12-22 06:53:39,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 140. [2020-12-22 06:53:39,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-22 06:53:39,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 188 transitions. [2020-12-22 06:53:39,541 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 188 transitions. Word has length 31 [2020-12-22 06:53:39,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:39,542 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 188 transitions. [2020-12-22 06:53:39,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:53:39,542 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 188 transitions. [2020-12-22 06:53:39,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:39,543 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:39,543 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] [2020-12-22 06:53:39,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:53:39,544 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:39,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:39,544 INFO L82 PathProgramCache]: Analyzing trace with hash -268396400, now seen corresponding path program 1 times [2020-12-22 06:53:39,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:39,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100377901] [2020-12-22 06:53:39,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:39,587 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 06:53:39,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100377901] [2020-12-22 06:53:39,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:39,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:39,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614516604] [2020-12-22 06:53:39,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:39,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:39,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:39,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:39,590 INFO L87 Difference]: Start difference. First operand 140 states and 188 transitions. Second operand 3 states. [2020-12-22 06:53:39,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:39,626 INFO L93 Difference]: Finished difference Result 324 states and 434 transitions. [2020-12-22 06:53:39,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:39,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-12-22 06:53:39,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:39,628 INFO L225 Difference]: With dead ends: 324 [2020-12-22 06:53:39,628 INFO L226 Difference]: Without dead ends: 190 [2020-12-22 06:53:39,629 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 06:53:39,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-12-22 06:53:39,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-12-22 06:53:39,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-12-22 06:53:39,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 248 transitions. [2020-12-22 06:53:39,649 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 248 transitions. Word has length 31 [2020-12-22 06:53:39,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:39,649 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 248 transitions. [2020-12-22 06:53:39,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:39,649 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 248 transitions. [2020-12-22 06:53:39,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 06:53:39,650 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:39,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:39,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:53:39,651 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:39,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:39,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1913811026, now seen corresponding path program 1 times [2020-12-22 06:53:39,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:39,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681932665] [2020-12-22 06:53:39,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:53:39,737 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:53:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:53:39,797 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:53:39,854 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:53:39,855 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:53:39,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:53:39,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:53:39 BoogieIcfgContainer [2020-12-22 06:53:39,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:53:40,000 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:53:40,000 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:53:40,003 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:53:40,003 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:37" (3/4) ... [2020-12-22 06:53:40,006 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:53:40,145 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec1_product49.cil.c-witness.graphml [2020-12-22 06:53:40,145 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:53:40,153 INFO L168 Benchmark]: Toolchain (without parser) took 4829.44 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 126.6 MB in the beginning and 119.7 MB in the end (delta: 6.9 MB). Peak memory consumption was 38.2 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:40,155 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:53:40,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 585.07 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 104.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:40,156 INFO L168 Benchmark]: Boogie Procedure Inliner took 163.30 ms. Allocated memory is still 152.0 MB. Free memory was 104.5 MB in the beginning and 133.5 MB in the end (delta: -29.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:40,157 INFO L168 Benchmark]: Boogie Preprocessor took 73.69 ms. Allocated memory is still 152.0 MB. Free memory was 133.5 MB in the beginning and 130.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:40,157 INFO L168 Benchmark]: RCFGBuilder took 1216.66 ms. Allocated memory is still 152.0 MB. Free memory was 130.9 MB in the beginning and 68.5 MB in the end (delta: 62.4 MB). Peak memory consumption was 62.9 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:40,158 INFO L168 Benchmark]: TraceAbstraction took 2633.65 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 68.0 MB in the beginning and 132.8 MB in the end (delta: -64.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:53:40,158 INFO L168 Benchmark]: Witness Printer took 145.21 ms. Allocated memory is still 182.5 MB. Free memory was 132.8 MB in the beginning and 119.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:40,161 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 585.07 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 104.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 163.30 ms. Allocated memory is still 152.0 MB. Free memory was 104.5 MB in the beginning and 133.5 MB in the end (delta: -29.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 73.69 ms. Allocated memory is still 152.0 MB. Free memory was 133.5 MB in the beginning and 130.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1216.66 ms. Allocated memory is still 152.0 MB. Free memory was 130.9 MB in the beginning and 68.5 MB in the end (delta: 62.4 MB). Peak memory consumption was 62.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2633.65 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 68.0 MB in the beginning and 132.8 MB in the end (delta: -64.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 145.21 ms. Allocated memory is still 182.5 MB. Free memory was 132.8 MB in the beginning and 119.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 952]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L71] int cleanupTimeShifts = 4; [L344] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L547] int pumpRunning = 0; [L548] int systemActive = 1; [L845] int waterLevel = 1; [L846] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L152] int retValue_acc ; [L153] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L835] int retValue_acc ; [L838] retValue_acc = 1 [L839] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L159] tmp = valid_product() [L161] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L745] int splverifierCounter ; [L746] int tmp ; [L747] int tmp___0 ; [L748] int tmp___1 ; [L749] int tmp___2 ; [L752] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L754] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L756] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L762] tmp = __VERIFIER_nondet_int() [L764] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L863] COND TRUE waterLevel < 2 [L864] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L772] tmp___0 = __VERIFIER_nondet_int() [L774] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L875] COND FALSE !(\read(methaneLevelCritical)) [L878] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L782] tmp___2 = __VERIFIER_nondet_int() [L784] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L554] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L561] COND TRUE \read(systemActive) [L609] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L612] COND FALSE !(\read(pumpRunning)) [L583] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L586] COND TRUE ! pumpRunning [L706] int retValue_acc ; [L707] int tmp ; [L708] int tmp___0 ; [L925] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L928] COND FALSE !(waterLevel < 2) [L932] retValue_acc = 0 [L933] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L712] tmp = isHighWaterSensorDry() [L714] COND FALSE !(\read(tmp)) [L717] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L719] retValue_acc = tmp___0 [L720] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L588] tmp = isHighWaterLevel() [L590] COND TRUE \read(tmp) [L637] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L46] int tmp ; [L47] int tmp___0 ; [L884] int retValue_acc ; [L887] retValue_acc = methaneLevelCritical [L888] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L51] tmp = isMethaneLevelCritical() [L53] COND TRUE \read(tmp) [L661] int retValue_acc ; [L664] retValue_acc = pumpRunning [L665] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L952] 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, 117 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 828 SDtfs, 1031 SDslu, 1037 SDs, 0 SdLazy, 143 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred 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, 523 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 223 ConstructedInterpolants, 0 QuantifiedInterpolants, 12222 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...