/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_spec4_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:56:33,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:56:33,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:56:34,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:56:34,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:56:34,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:56:34,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:56:34,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:56:34,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:56:34,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:56:34,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:56:34,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:56:34,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:56:34,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:56:34,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:56:34,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:56:34,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:56:34,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:56:34,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:56:34,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:56:34,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:56:34,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:56:34,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:56:34,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:56:34,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:56:34,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:56:34,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:56:34,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:56:34,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:56:34,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:56:34,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:56:34,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:56:34,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:56:34,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:56:34,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:56:34,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:56:34,116 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:56:34,184 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:56:34,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:56:34,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:56:34,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:56:34,190 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:56:34,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:56:34,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:56:34,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:56:34,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:56:34,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:56:34,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:56:34,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:56:34,194 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:56:34,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:56:34,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:56:34,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:56:34,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:56:34,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:56:34,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:56:34,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:56:34,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:56:34,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:56:34,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:56:34,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:56:34,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:56:34,197 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:56:34,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:56:34,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:56:34,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:56:34,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:56:34,630 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:56:34,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c [2020-12-22 06:56:34,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06e2f678/f931d779b8a246eab8cf0eba497f391f/FLAGa9ecf750d [2020-12-22 06:56:35,443 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:56:35,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c [2020-12-22 06:56:35,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06e2f678/f931d779b8a246eab8cf0eba497f391f/FLAGa9ecf750d [2020-12-22 06:56:35,752 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06e2f678/f931d779b8a246eab8cf0eba497f391f [2020-12-22 06:56:35,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:56:35,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:56:35,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:56:35,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:56:35,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:56:35,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@458aac06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35, skipping insertion in model container [2020-12-22 06:56:35,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:56:35,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:56:36,084 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_spec4_product36.cil.c[6303,6316] [2020-12-22 06:56:36,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:56:36,216 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:56:36,296 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_spec4_product36.cil.c[6303,6316] [2020-12-22 06:56:36,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:56:36,388 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:56:36,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:36 WrapperNode [2020-12-22 06:56:36,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:56:36,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:56:36,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:56:36,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:56:36,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:36" (1/1) ... [2020-12-22 06:56:36,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:36" (1/1) ... [2020-12-22 06:56:36,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:56:36,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:56:36,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:56:36,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:56:36,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:36" (1/1) ... [2020-12-22 06:56:36,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:36" (1/1) ... [2020-12-22 06:56:36,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:36" (1/1) ... [2020-12-22 06:56:36,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:36" (1/1) ... [2020-12-22 06:56:36,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:36" (1/1) ... [2020-12-22 06:56:36,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:36" (1/1) ... [2020-12-22 06:56:36,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:36" (1/1) ... [2020-12-22 06:56:36,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:56:36,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:56:36,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:56:36,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:56:36,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:36" (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 06:56:36,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:56:36,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:56:36,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:56:36,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:56:37,699 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:56:37,700 INFO L299 CfgBuilder]: Removed 102 assume(true) statements. [2020-12-22 06:56:37,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:37 BoogieIcfgContainer [2020-12-22 06:56:37,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:56:37,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:56:37,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:56:37,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:56:37,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:56:35" (1/3) ... [2020-12-22 06:56:37,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1739d9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:37, skipping insertion in model container [2020-12-22 06:56:37,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:36" (2/3) ... [2020-12-22 06:56:37,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1739d9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:37, skipping insertion in model container [2020-12-22 06:56:37,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:37" (3/3) ... [2020-12-22 06:56:37,720 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product36.cil.c [2020-12-22 06:56:37,727 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:56:37,733 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:56:37,755 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:56:37,793 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:56:37,794 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:56:37,794 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:56:37,794 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:56:37,794 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:56:37,794 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:56:37,794 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:56:37,795 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:56:37,813 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-12-22 06:56:37,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 06:56:37,821 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:37,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:37,823 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:37,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:37,830 INFO L82 PathProgramCache]: Analyzing trace with hash -502845476, now seen corresponding path program 1 times [2020-12-22 06:56:37,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:37,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159445558] [2020-12-22 06:56:37,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:38,148 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 06:56:38,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159445558] [2020-12-22 06:56:38,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:38,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:56:38,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827740897] [2020-12-22 06:56:38,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:56:38,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:38,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:56:38,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:56:38,184 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 2 states. [2020-12-22 06:56:38,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:38,243 INFO L93 Difference]: Finished difference Result 154 states and 233 transitions. [2020-12-22 06:56:38,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:56:38,244 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-22 06:56:38,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:38,272 INFO L225 Difference]: With dead ends: 154 [2020-12-22 06:56:38,273 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 06:56:38,277 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 06:56:38,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 06:56:38,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-12-22 06:56:38,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-22 06:56:38,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 108 transitions. [2020-12-22 06:56:38,321 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 108 transitions. Word has length 16 [2020-12-22 06:56:38,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:38,322 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 108 transitions. [2020-12-22 06:56:38,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:56:38,322 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 108 transitions. [2020-12-22 06:56:38,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 06:56:38,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:38,324 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 06:56:38,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:56:38,324 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:38,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:38,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1549602373, now seen corresponding path program 1 times [2020-12-22 06:56:38,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:38,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015852300] [2020-12-22 06:56:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:38,492 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 06:56:38,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015852300] [2020-12-22 06:56:38,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:38,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:56:38,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652697923] [2020-12-22 06:56:38,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:38,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:38,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:38,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:38,496 INFO L87 Difference]: Start difference. First operand 76 states and 108 transitions. Second operand 3 states. [2020-12-22 06:56:38,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:38,509 INFO L93 Difference]: Finished difference Result 76 states and 108 transitions. [2020-12-22 06:56:38,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:38,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 06:56:38,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:38,511 INFO L225 Difference]: With dead ends: 76 [2020-12-22 06:56:38,511 INFO L226 Difference]: Without dead ends: 36 [2020-12-22 06:56:38,512 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 06:56:38,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-22 06:56:38,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-22 06:56:38,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-22 06:56:38,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2020-12-22 06:56:38,519 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 17 [2020-12-22 06:56:38,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:38,520 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2020-12-22 06:56:38,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:38,520 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2020-12-22 06:56:38,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 06:56:38,521 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:38,521 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 06:56:38,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:56:38,522 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:38,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:38,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1499295122, now seen corresponding path program 1 times [2020-12-22 06:56:38,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:38,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116137811] [2020-12-22 06:56:38,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:38,681 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 06:56:38,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116137811] [2020-12-22 06:56:38,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:38,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:38,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455986732] [2020-12-22 06:56:38,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:38,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:38,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:38,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:38,690 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand 5 states. [2020-12-22 06:56:38,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:38,777 INFO L93 Difference]: Finished difference Result 89 states and 130 transitions. [2020-12-22 06:56:38,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:38,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-12-22 06:56:38,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:38,780 INFO L225 Difference]: With dead ends: 89 [2020-12-22 06:56:38,780 INFO L226 Difference]: Without dead ends: 59 [2020-12-22 06:56:38,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 06:56:38,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-22 06:56:38,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2020-12-22 06:56:38,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 06:56:38,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 80 transitions. [2020-12-22 06:56:38,792 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 80 transitions. Word has length 22 [2020-12-22 06:56:38,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:38,793 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 80 transitions. [2020-12-22 06:56:38,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:38,793 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 80 transitions. [2020-12-22 06:56:38,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 06:56:38,794 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:38,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:38,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:56:38,795 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:38,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:38,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1870150441, now seen corresponding path program 1 times [2020-12-22 06:56:38,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:38,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101197715] [2020-12-22 06:56:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:38,886 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 06:56:38,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101197715] [2020-12-22 06:56:38,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:38,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:56:38,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511365822] [2020-12-22 06:56:38,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:38,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:38,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:38,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:38,890 INFO L87 Difference]: Start difference. First operand 55 states and 80 transitions. Second operand 3 states. [2020-12-22 06:56:38,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:38,924 INFO L93 Difference]: Finished difference Result 125 states and 184 transitions. [2020-12-22 06:56:38,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:38,925 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 06:56:38,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:38,926 INFO L225 Difference]: With dead ends: 125 [2020-12-22 06:56:38,926 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 06:56:38,927 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 06:56:38,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 06:56:38,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-12-22 06:56:38,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 06:56:38,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2020-12-22 06:56:38,940 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 23 [2020-12-22 06:56:38,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:38,940 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2020-12-22 06:56:38,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:38,941 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2020-12-22 06:56:38,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 06:56:38,942 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:38,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:38,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:56:38,942 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:38,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:38,943 INFO L82 PathProgramCache]: Analyzing trace with hash 944519591, now seen corresponding path program 1 times [2020-12-22 06:56:38,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:38,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855107074] [2020-12-22 06:56:38,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:39,057 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 06:56:39,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855107074] [2020-12-22 06:56:39,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:39,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:56:39,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657090764] [2020-12-22 06:56:39,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:56:39,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:39,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:56:39,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:39,060 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 8 states. [2020-12-22 06:56:39,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:39,512 INFO L93 Difference]: Finished difference Result 458 states and 673 transitions. [2020-12-22 06:56:39,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 06:56:39,513 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-22 06:56:39,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:39,516 INFO L225 Difference]: With dead ends: 458 [2020-12-22 06:56:39,516 INFO L226 Difference]: Without dead ends: 390 [2020-12-22 06:56:39,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-12-22 06:56:39,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-12-22 06:56:39,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 189. [2020-12-22 06:56:39,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-12-22 06:56:39,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 263 transitions. [2020-12-22 06:56:39,554 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 263 transitions. Word has length 25 [2020-12-22 06:56:39,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:39,555 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 263 transitions. [2020-12-22 06:56:39,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 06:56:39,555 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 263 transitions. [2020-12-22 06:56:39,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 06:56:39,566 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:39,566 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:39,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:56:39,566 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:39,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:39,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1143002491, now seen corresponding path program 1 times [2020-12-22 06:56:39,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:39,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647094355] [2020-12-22 06:56:39,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:39,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:39,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647094355] [2020-12-22 06:56:39,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816303477] [2020-12-22 06:56:39,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:56:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:39,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 06:56:39,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:56:40,058 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:40,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 06:56:40,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2020-12-22 06:56:40,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200306471] [2020-12-22 06:56:40,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:56:40,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:40,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:56:40,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:40,061 INFO L87 Difference]: Start difference. First operand 189 states and 263 transitions. Second operand 4 states. [2020-12-22 06:56:40,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:40,255 INFO L93 Difference]: Finished difference Result 423 states and 603 transitions. [2020-12-22 06:56:40,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:56:40,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-12-22 06:56:40,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:40,259 INFO L225 Difference]: With dead ends: 423 [2020-12-22 06:56:40,259 INFO L226 Difference]: Without dead ends: 298 [2020-12-22 06:56:40,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 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 06:56:40,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-22 06:56:40,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 287. [2020-12-22 06:56:40,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-22 06:56:40,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 406 transitions. [2020-12-22 06:56:40,301 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 406 transitions. Word has length 41 [2020-12-22 06:56:40,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:40,302 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 406 transitions. [2020-12-22 06:56:40,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:56:40,302 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 406 transitions. [2020-12-22 06:56:40,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 06:56:40,304 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:40,305 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:40,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 06:56:40,520 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:40,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:40,521 INFO L82 PathProgramCache]: Analyzing trace with hash -122499722, now seen corresponding path program 1 times [2020-12-22 06:56:40,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:40,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596576464] [2020-12-22 06:56:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:40,608 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:56:40,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596576464] [2020-12-22 06:56:40,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:40,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:40,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770436594] [2020-12-22 06:56:40,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:40,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:40,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:40,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:40,611 INFO L87 Difference]: Start difference. First operand 287 states and 406 transitions. Second operand 5 states. [2020-12-22 06:56:40,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:40,697 INFO L93 Difference]: Finished difference Result 877 states and 1232 transitions. [2020-12-22 06:56:40,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:40,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-12-22 06:56:40,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:40,709 INFO L225 Difference]: With dead ends: 877 [2020-12-22 06:56:40,710 INFO L226 Difference]: Without dead ends: 596 [2020-12-22 06:56:40,715 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 06:56:40,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-12-22 06:56:40,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 299. [2020-12-22 06:56:40,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-12-22 06:56:40,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 418 transitions. [2020-12-22 06:56:40,757 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 418 transitions. Word has length 44 [2020-12-22 06:56:40,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:40,758 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 418 transitions. [2020-12-22 06:56:40,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:40,758 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 418 transitions. [2020-12-22 06:56:40,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 06:56:40,760 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:40,761 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:40,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:56:40,761 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:40,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:40,762 INFO L82 PathProgramCache]: Analyzing trace with hash 18048888, now seen corresponding path program 1 times [2020-12-22 06:56:40,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:40,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581624484] [2020-12-22 06:56:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:56:40,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581624484] [2020-12-22 06:56:40,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:40,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:56:40,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021445526] [2020-12-22 06:56:40,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:56:40,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:40,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:56:40,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:56:40,836 INFO L87 Difference]: Start difference. First operand 299 states and 418 transitions. Second operand 6 states. [2020-12-22 06:56:40,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:40,969 INFO L93 Difference]: Finished difference Result 728 states and 1013 transitions. [2020-12-22 06:56:40,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:56:40,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-12-22 06:56:40,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:40,973 INFO L225 Difference]: With dead ends: 728 [2020-12-22 06:56:40,973 INFO L226 Difference]: Without dead ends: 435 [2020-12-22 06:56:40,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 06:56:40,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-12-22 06:56:41,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 274. [2020-12-22 06:56:41,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-12-22 06:56:41,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 380 transitions. [2020-12-22 06:56:41,011 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 380 transitions. Word has length 44 [2020-12-22 06:56:41,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:41,012 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 380 transitions. [2020-12-22 06:56:41,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:56:41,012 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 380 transitions. [2020-12-22 06:56:41,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 06:56:41,018 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:41,019 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:41,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:56:41,019 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:41,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:41,020 INFO L82 PathProgramCache]: Analyzing trace with hash 61594744, now seen corresponding path program 1 times [2020-12-22 06:56:41,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:41,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842531307] [2020-12-22 06:56:41,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:41,179 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:41,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842531307] [2020-12-22 06:56:41,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616553402] [2020-12-22 06:56:41,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:56:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:41,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 06:56:41,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:56:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:41,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:56:41,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-12-22 06:56:41,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510557005] [2020-12-22 06:56:41,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:56:41,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:41,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:56:41,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:41,421 INFO L87 Difference]: Start difference. First operand 274 states and 380 transitions. Second operand 8 states. [2020-12-22 06:56:41,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:41,732 INFO L93 Difference]: Finished difference Result 683 states and 950 transitions. [2020-12-22 06:56:41,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:56:41,733 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-12-22 06:56:41,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:41,735 INFO L225 Difference]: With dead ends: 683 [2020-12-22 06:56:41,736 INFO L226 Difference]: Without dead ends: 456 [2020-12-22 06:56:41,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:56:41,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-12-22 06:56:41,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 236. [2020-12-22 06:56:41,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-12-22 06:56:41,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 319 transitions. [2020-12-22 06:56:41,767 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 319 transitions. Word has length 45 [2020-12-22 06:56:41,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:41,768 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 319 transitions. [2020-12-22 06:56:41,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 06:56:41,768 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 319 transitions. [2020-12-22 06:56:41,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:56:41,769 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:41,769 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:41,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:56:41,984 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:41,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:41,985 INFO L82 PathProgramCache]: Analyzing trace with hash -594503994, now seen corresponding path program 2 times [2020-12-22 06:56:41,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:41,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242880891] [2020-12-22 06:56:41,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:56:42,056 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:56:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:56:42,120 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:56:42,177 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:56:42,177 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:56:42,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:56:42,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:56:42 BoogieIcfgContainer [2020-12-22 06:56:42,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:56:42,320 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:56:42,320 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:56:42,320 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:56:42,323 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:37" (3/4) ... [2020-12-22 06:56:42,325 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:56:42,472 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec4_product36.cil.c-witness.graphml [2020-12-22 06:56:42,473 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:56:42,475 INFO L168 Benchmark]: Toolchain (without parser) took 6715.05 ms. Allocated memory was 155.2 MB in the beginning and 187.7 MB in the end (delta: 32.5 MB). Free memory was 130.2 MB in the beginning and 86.5 MB in the end (delta: 43.7 MB). Peak memory consumption was 78.7 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:42,475 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:56:42,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 625.23 ms. Allocated memory is still 155.2 MB. Free memory was 130.2 MB in the beginning and 109.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:42,476 INFO L168 Benchmark]: Boogie Procedure Inliner took 127.22 ms. Allocated memory is still 155.2 MB. Free memory was 109.0 MB in the beginning and 106.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:42,477 INFO L168 Benchmark]: Boogie Preprocessor took 82.15 ms. Allocated memory is still 155.2 MB. Free memory was 106.1 MB in the beginning and 104.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:42,477 INFO L168 Benchmark]: RCFGBuilder took 1104.57 ms. Allocated memory is still 155.2 MB. Free memory was 103.9 MB in the beginning and 88.0 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:42,478 INFO L168 Benchmark]: TraceAbstraction took 4610.76 ms. Allocated memory was 155.2 MB in the beginning and 187.7 MB in the end (delta: 32.5 MB). Free memory was 87.5 MB in the beginning and 110.7 MB in the end (delta: -23.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:42,478 INFO L168 Benchmark]: Witness Printer took 152.67 ms. Allocated memory is still 187.7 MB. Free memory was 110.7 MB in the beginning and 86.5 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:42,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 625.23 ms. Allocated memory is still 155.2 MB. Free memory was 130.2 MB in the beginning and 109.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 127.22 ms. Allocated memory is still 155.2 MB. Free memory was 109.0 MB in the beginning and 106.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 82.15 ms. Allocated memory is still 155.2 MB. Free memory was 106.1 MB in the beginning and 104.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1104.57 ms. Allocated memory is still 155.2 MB. Free memory was 103.9 MB in the beginning and 88.0 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4610.76 ms. Allocated memory was 155.2 MB in the beginning and 187.7 MB in the end (delta: 32.5 MB). Free memory was 87.5 MB in the beginning and 110.7 MB in the end (delta: -23.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 8.0 GB. * Witness Printer took 152.67 ms. Allocated memory is still 187.7 MB. Free memory was 110.7 MB in the beginning and 86.5 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 439]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L125] int pumpRunning = 0; [L126] int systemActive = 1; [L301] int cleanupTimeShifts = 4; [L613] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L811] int waterLevel = 1; [L812] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L377] int retValue_acc ; [L378] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L426] int retValue_acc ; [L429] retValue_acc = 1 [L430] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L384] tmp = valid_product() [L386] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L49] int splverifierCounter ; [L50] int tmp ; [L51] int tmp___0 ; [L52] int tmp___1 ; [L53] int tmp___2 ; [L56] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L66] tmp = __VERIFIER_nondet_int() [L68] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L829] COND TRUE waterLevel < 2 [L830] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L296] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L133] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L140] COND TRUE \read(systemActive) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L165] COND TRUE ! pumpRunning [L259] int retValue_acc ; [L260] int tmp ; [L261] int tmp___0 ; [L891] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L894] COND FALSE !(waterLevel < 2) [L898] retValue_acc = 0 [L899] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L265] tmp = isHighWaterSensorDry() [L267] COND FALSE !(\read(tmp)) [L270] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L272] retValue_acc = tmp___0 [L273] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L167] tmp = isHighWaterLevel() [L169] COND TRUE \read(tmp) [L190] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L906] int tmp ; [L907] int tmp___0 ; [L882] int retValue_acc ; [L885] retValue_acc = waterLevel [L886] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L911] tmp = getWaterLevel() [L913] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L66] tmp = __VERIFIER_nondet_int() [L68] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L296] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L133] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L817] COND TRUE waterLevel > 0 [L818] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L140] COND TRUE \read(systemActive) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L165] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L906] int tmp ; [L907] int tmp___0 ; [L882] int retValue_acc ; [L885] retValue_acc = waterLevel [L886] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L911] tmp = getWaterLevel() [L913] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L66] tmp = __VERIFIER_nondet_int() [L68] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L296] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L133] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L817] COND TRUE waterLevel > 0 [L818] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L140] COND TRUE \read(systemActive) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L165] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L906] int tmp ; [L907] int tmp___0 ; [L882] int retValue_acc ; [L885] retValue_acc = waterLevel [L886] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L911] tmp = getWaterLevel() [L913] COND TRUE tmp == 0 [L214] int retValue_acc ; [L217] retValue_acc = pumpRunning [L218] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L915] tmp___0 = isPumpRunning() [L917] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L439] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 80 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 691 SDtfs, 1345 SDslu, 1191 SDs, 0 SdLazy, 205 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=299occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 896 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 423 NumberOfCodeBlocks, 423 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 352 ConstructedInterpolants, 0 QuantifiedInterpolants, 24290 SizeOfPredicates, 3 NumberOfNonLiveVariables, 790 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 75/86 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...