/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_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:53:14,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:53:14,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:53:14,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:53:14,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:53:14,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:53:14,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:53:14,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:53:14,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:53:14,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:53:14,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:53:14,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:53:14,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:53:14,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:53:14,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:53:14,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:53:14,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:53:14,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:53:14,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:53:14,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:53:14,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:53:14,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:53:14,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:53:14,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:53:14,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:53:14,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:53:14,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:53:14,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:53:14,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:53:14,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:53:14,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:53:14,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:53:14,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:53:14,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:53:14,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:53:14,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:53:14,161 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:53:14,189 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:53:14,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:53:14,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:53:14,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:53:14,191 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:53:14,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:53:14,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:53:14,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:53:14,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:53:14,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:53:14,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:53:14,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:53:14,193 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:53:14,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:53:14,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:53:14,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:53:14,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:53:14,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:53:14,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:53:14,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:53:14,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:53:14,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:53:14,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:53:14,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:53:14,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:53:14,195 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:53:14,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:53:14,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:53:14,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:53:14,620 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:53:14,621 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:53:14,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c [2020-12-22 06:53:14,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94aaada5c/a2a81e50cdfc4fd0879cb2d21ff5606f/FLAGac2df3646 [2020-12-22 06:53:15,396 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:53:15,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c [2020-12-22 06:53:15,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94aaada5c/a2a81e50cdfc4fd0879cb2d21ff5606f/FLAGac2df3646 [2020-12-22 06:53:15,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94aaada5c/a2a81e50cdfc4fd0879cb2d21ff5606f [2020-12-22 06:53:15,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:53:15,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:53:15,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:53:15,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:53:15,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:53:15,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:53:15" (1/1) ... [2020-12-22 06:53:15,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f62f179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:15, skipping insertion in model container [2020-12-22 06:53:15,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:53:15" (1/1) ... [2020-12-22 06:53:15,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:53:15,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:53:15,999 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_product34.cil.c[12260,12273] [2020-12-22 06:53:16,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:53:16,047 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:53:16,105 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_product34.cil.c[12260,12273] [2020-12-22 06:53:16,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:53:16,178 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:53:16,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:16 WrapperNode [2020-12-22 06:53:16,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:53:16,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:53:16,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:53:16,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:53:16,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:16" (1/1) ... [2020-12-22 06:53:16,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:16" (1/1) ... [2020-12-22 06:53:16,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:53:16,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:53:16,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:53:16,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:53:16,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:16" (1/1) ... [2020-12-22 06:53:16,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:16" (1/1) ... [2020-12-22 06:53:16,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:16" (1/1) ... [2020-12-22 06:53:16,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:16" (1/1) ... [2020-12-22 06:53:16,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:16" (1/1) ... [2020-12-22 06:53:16,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:16" (1/1) ... [2020-12-22 06:53:16,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:16" (1/1) ... [2020-12-22 06:53:16,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:53:16,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:53:16,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:53:16,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:53:16,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:16" (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 06:53:16,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:53:16,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:53:16,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:53:16,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:53:17,519 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:53:17,519 INFO L299 CfgBuilder]: Removed 98 assume(true) statements. [2020-12-22 06:53:17,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:17 BoogieIcfgContainer [2020-12-22 06:53:17,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:53:17,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:53:17,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:53:17,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:53:17,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:53:15" (1/3) ... [2020-12-22 06:53:17,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b1cdea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:53:17, skipping insertion in model container [2020-12-22 06:53:17,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:16" (2/3) ... [2020-12-22 06:53:17,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b1cdea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:53:17, skipping insertion in model container [2020-12-22 06:53:17,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:17" (3/3) ... [2020-12-22 06:53:17,531 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2020-12-22 06:53:17,538 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:53:17,543 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:53:17,559 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:53:17,589 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:53:17,589 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:53:17,589 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:53:17,589 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:53:17,589 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:53:17,590 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:53:17,590 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:53:17,590 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:53:17,606 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-12-22 06:53:17,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 06:53:17,612 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:17,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:17,614 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:17,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:17,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1424204181, now seen corresponding path program 1 times [2020-12-22 06:53:17,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:17,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961134837] [2020-12-22 06:53:17,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:18,014 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 06:53:18,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961134837] [2020-12-22 06:53:18,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:18,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:18,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608620032] [2020-12-22 06:53:18,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:53:18,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:18,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:53:18,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:53:18,049 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2020-12-22 06:53:18,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:18,110 INFO L93 Difference]: Finished difference Result 150 states and 227 transitions. [2020-12-22 06:53:18,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:53:18,112 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-22 06:53:18,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:18,147 INFO L225 Difference]: With dead ends: 150 [2020-12-22 06:53:18,148 INFO L226 Difference]: Without dead ends: 74 [2020-12-22 06:53:18,154 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 06:53:18,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-22 06:53:18,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-22 06:53:18,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 06:53:18,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2020-12-22 06:53:18,220 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2020-12-22 06:53:18,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:18,221 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2020-12-22 06:53:18,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:53:18,221 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2020-12-22 06:53:18,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 06:53:18,223 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:18,223 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 06:53:18,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:53:18,225 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:18,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:18,227 INFO L82 PathProgramCache]: Analyzing trace with hash -631654862, now seen corresponding path program 1 times [2020-12-22 06:53:18,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:18,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284146468] [2020-12-22 06:53:18,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:18,404 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 06:53:18,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284146468] [2020-12-22 06:53:18,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:18,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:53:18,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553327031] [2020-12-22 06:53:18,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:18,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:18,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:18,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:18,411 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 3 states. [2020-12-22 06:53:18,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:18,438 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2020-12-22 06:53:18,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:18,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 06:53:18,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:18,441 INFO L225 Difference]: With dead ends: 74 [2020-12-22 06:53:18,441 INFO L226 Difference]: Without dead ends: 34 [2020-12-22 06:53:18,443 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 06:53:18,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-22 06:53:18,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-22 06:53:18,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 06:53:18,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2020-12-22 06:53:18,453 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2020-12-22 06:53:18,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:18,453 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2020-12-22 06:53:18,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:18,454 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2020-12-22 06:53:18,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 06:53:18,456 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:18,456 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 06:53:18,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:53:18,457 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:18,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:18,459 INFO L82 PathProgramCache]: Analyzing trace with hash -964945646, now seen corresponding path program 1 times [2020-12-22 06:53:18,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:18,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818412680] [2020-12-22 06:53:18,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:53:18,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818412680] [2020-12-22 06:53:18,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:18,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:53:18,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094817082] [2020-12-22 06:53:18,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:18,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:18,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:18,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:18,598 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 3 states. [2020-12-22 06:53:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:18,636 INFO L93 Difference]: Finished difference Result 62 states and 90 transitions. [2020-12-22 06:53:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:18,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 06:53:18,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:18,638 INFO L225 Difference]: With dead ends: 62 [2020-12-22 06:53:18,638 INFO L226 Difference]: Without dead ends: 34 [2020-12-22 06:53:18,639 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 06:53:18,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-22 06:53:18,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-22 06:53:18,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 06:53:18,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2020-12-22 06:53:18,654 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 22 [2020-12-22 06:53:18,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:18,656 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2020-12-22 06:53:18,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:18,656 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2020-12-22 06:53:18,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 06:53:18,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:18,660 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 06:53:18,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:53:18,661 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:18,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:18,662 INFO L82 PathProgramCache]: Analyzing trace with hash -952202930, now seen corresponding path program 1 times [2020-12-22 06:53:18,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:18,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036741480] [2020-12-22 06:53:18,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:18,749 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 06:53:18,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036741480] [2020-12-22 06:53:18,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:18,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:18,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345982930] [2020-12-22 06:53:18,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:18,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:18,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:18,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:18,754 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand 3 states. [2020-12-22 06:53:18,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:18,785 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2020-12-22 06:53:18,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:18,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 06:53:18,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:18,789 INFO L225 Difference]: With dead ends: 83 [2020-12-22 06:53:18,789 INFO L226 Difference]: Without dead ends: 55 [2020-12-22 06:53:18,790 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 06:53:18,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-22 06:53:18,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-12-22 06:53:18,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 06:53:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 74 transitions. [2020-12-22 06:53:18,805 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 74 transitions. Word has length 23 [2020-12-22 06:53:18,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:18,806 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 74 transitions. [2020-12-22 06:53:18,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:18,806 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 74 transitions. [2020-12-22 06:53:18,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 06:53:18,808 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:18,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:18,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:53:18,808 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:18,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:18,809 INFO L82 PathProgramCache]: Analyzing trace with hash -2049720417, now seen corresponding path program 1 times [2020-12-22 06:53:18,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:18,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698004161] [2020-12-22 06:53:18,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:18,928 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 06:53:18,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698004161] [2020-12-22 06:53:18,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:18,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:53:18,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168222393] [2020-12-22 06:53:18,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:18,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:18,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:18,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:18,933 INFO L87 Difference]: Start difference. First operand 53 states and 74 transitions. Second operand 5 states. [2020-12-22 06:53:18,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:18,985 INFO L93 Difference]: Finished difference Result 139 states and 194 transitions. [2020-12-22 06:53:18,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:53:18,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-12-22 06:53:18,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:18,987 INFO L225 Difference]: With dead ends: 139 [2020-12-22 06:53:18,987 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 06:53:18,988 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 06:53:18,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 06:53:18,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2020-12-22 06:53:18,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 06:53:18,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2020-12-22 06:53:18,995 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 29 [2020-12-22 06:53:18,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:18,995 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2020-12-22 06:53:18,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:18,995 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2020-12-22 06:53:18,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 06:53:18,996 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:18,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:18,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:53:18,997 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:18,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:18,997 INFO L82 PathProgramCache]: Analyzing trace with hash 612790626, now seen corresponding path program 1 times [2020-12-22 06:53:18,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:18,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120800126] [2020-12-22 06:53:18,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:19,060 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 06:53:19,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120800126] [2020-12-22 06:53:19,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:19,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:53:19,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017761588] [2020-12-22 06:53:19,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:19,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:19,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:19,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:19,063 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand 5 states. [2020-12-22 06:53:19,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:19,142 INFO L93 Difference]: Finished difference Result 270 states and 384 transitions. [2020-12-22 06:53:19,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:53:19,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-12-22 06:53:19,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:19,146 INFO L225 Difference]: With dead ends: 270 [2020-12-22 06:53:19,146 INFO L226 Difference]: Without dead ends: 220 [2020-12-22 06:53:19,150 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 06:53:19,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-12-22 06:53:19,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 100. [2020-12-22 06:53:19,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 06:53:19,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 137 transitions. [2020-12-22 06:53:19,178 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 137 transitions. Word has length 29 [2020-12-22 06:53:19,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:19,178 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 137 transitions. [2020-12-22 06:53:19,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:19,178 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 137 transitions. [2020-12-22 06:53:19,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 06:53:19,185 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:19,185 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] [2020-12-22 06:53:19,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:53:19,185 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:19,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:19,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1166654740, now seen corresponding path program 1 times [2020-12-22 06:53:19,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:19,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508645889] [2020-12-22 06:53:19,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:19,260 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 06:53:19,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508645889] [2020-12-22 06:53:19,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:19,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:53:19,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531274074] [2020-12-22 06:53:19,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:19,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:19,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:19,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:19,264 INFO L87 Difference]: Start difference. First operand 100 states and 137 transitions. Second operand 5 states. [2020-12-22 06:53:19,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:19,361 INFO L93 Difference]: Finished difference Result 280 states and 386 transitions. [2020-12-22 06:53:19,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:53:19,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-12-22 06:53:19,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:19,365 INFO L225 Difference]: With dead ends: 280 [2020-12-22 06:53:19,365 INFO L226 Difference]: Without dead ends: 278 [2020-12-22 06:53:19,367 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 06:53:19,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-12-22 06:53:19,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 100. [2020-12-22 06:53:19,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 06:53:19,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 136 transitions. [2020-12-22 06:53:19,380 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 136 transitions. Word has length 30 [2020-12-22 06:53:19,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:19,381 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 136 transitions. [2020-12-22 06:53:19,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:19,381 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 136 transitions. [2020-12-22 06:53:19,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 06:53:19,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:19,382 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 06:53:19,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:53:19,382 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:19,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:19,383 INFO L82 PathProgramCache]: Analyzing trace with hash 72774503, now seen corresponding path program 1 times [2020-12-22 06:53:19,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:19,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629364970] [2020-12-22 06:53:19,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:19,447 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 06:53:19,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629364970] [2020-12-22 06:53:19,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:19,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:53:19,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431750908] [2020-12-22 06:53:19,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:53:19,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:19,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:53:19,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:53:19,449 INFO L87 Difference]: Start difference. First operand 100 states and 136 transitions. Second operand 4 states. [2020-12-22 06:53:19,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:19,478 INFO L93 Difference]: Finished difference Result 240 states and 326 transitions. [2020-12-22 06:53:19,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:53:19,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-12-22 06:53:19,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:19,480 INFO L225 Difference]: With dead ends: 240 [2020-12-22 06:53:19,480 INFO L226 Difference]: Without dead ends: 146 [2020-12-22 06:53:19,481 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 06:53:19,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-12-22 06:53:19,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 104. [2020-12-22 06:53:19,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-22 06:53:19,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 140 transitions. [2020-12-22 06:53:19,491 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 140 transitions. Word has length 30 [2020-12-22 06:53:19,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:19,492 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 140 transitions. [2020-12-22 06:53:19,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:53:19,492 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 140 transitions. [2020-12-22 06:53:19,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 06:53:19,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:19,493 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 06:53:19,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:53:19,493 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:19,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:19,494 INFO L82 PathProgramCache]: Analyzing trace with hash 330939941, now seen corresponding path program 1 times [2020-12-22 06:53:19,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:19,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485866373] [2020-12-22 06:53:19,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:19,541 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 06:53:19,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485866373] [2020-12-22 06:53:19,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:19,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:19,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086398320] [2020-12-22 06:53:19,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:19,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:19,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:19,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:19,544 INFO L87 Difference]: Start difference. First operand 104 states and 140 transitions. Second operand 3 states. [2020-12-22 06:53:19,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:19,568 INFO L93 Difference]: Finished difference Result 250 states and 336 transitions. [2020-12-22 06:53:19,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:19,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-22 06:53:19,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:19,569 INFO L225 Difference]: With dead ends: 250 [2020-12-22 06:53:19,570 INFO L226 Difference]: Without dead ends: 152 [2020-12-22 06:53:19,570 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 06:53:19,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-12-22 06:53:19,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2020-12-22 06:53:19,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-22 06:53:19,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 198 transitions. [2020-12-22 06:53:19,585 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 198 transitions. Word has length 30 [2020-12-22 06:53:19,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:19,585 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 198 transitions. [2020-12-22 06:53:19,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:19,586 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 198 transitions. [2020-12-22 06:53:19,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:19,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:19,587 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 06:53:19,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:53:19,587 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:19,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:19,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1676876253, now seen corresponding path program 1 times [2020-12-22 06:53:19,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:19,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607588534] [2020-12-22 06:53:19,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:53:19,652 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:53:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:53:19,704 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:53:19,755 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:53:19,755 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:53:19,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:53:19,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:53:19 BoogieIcfgContainer [2020-12-22 06:53:19,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:53:19,891 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:53:19,891 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:53:19,891 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:53:19,891 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:17" (3/4) ... [2020-12-22 06:53:19,899 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:53:20,035 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec1_product34.cil.c-witness.graphml [2020-12-22 06:53:20,037 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:53:20,039 INFO L168 Benchmark]: Toolchain (without parser) took 4386.71 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 124.9 MB in the beginning and 77.9 MB in the end (delta: 47.0 MB). Peak memory consumption was 77.8 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:20,043 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 122.4 MB in the beginning and 122.3 MB in the end (delta: 89.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:53:20,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 525.90 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 104.2 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:20,048 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.33 ms. Allocated memory is still 151.0 MB. Free memory was 104.2 MB in the beginning and 101.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:20,048 INFO L168 Benchmark]: Boogie Preprocessor took 41.13 ms. Allocated memory is still 151.0 MB. Free memory was 101.2 MB in the beginning and 99.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:20,049 INFO L168 Benchmark]: RCFGBuilder took 1225.29 ms. Allocated memory is still 151.0 MB. Free memory was 99.1 MB in the beginning and 83.3 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:20,049 INFO L168 Benchmark]: TraceAbstraction took 2362.99 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 82.8 MB in the beginning and 91.0 MB in the end (delta: -8.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:20,050 INFO L168 Benchmark]: Witness Printer took 146.54 ms. Allocated memory is still 181.4 MB. Free memory was 91.0 MB in the beginning and 77.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:20,053 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 122.4 MB in the beginning and 122.3 MB in the end (delta: 89.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 525.90 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 104.2 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 73.33 ms. Allocated memory is still 151.0 MB. Free memory was 104.2 MB in the beginning and 101.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.13 ms. Allocated memory is still 151.0 MB. Free memory was 101.2 MB in the beginning and 99.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1225.29 ms. Allocated memory is still 151.0 MB. Free memory was 99.1 MB in the beginning and 83.3 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2362.99 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 82.8 MB in the beginning and 91.0 MB in the end (delta: -8.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 8.0 GB. * Witness Printer took 146.54 ms. Allocated memory is still 181.4 MB. Free memory was 91.0 MB in the beginning and 77.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 516]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L315] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L526] int waterLevel = 1; [L527] int methaneLevelCritical = 0; [L691] int pumpRunning = 0; [L692] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L123] int retValue_acc ; [L124] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L904] int retValue_acc ; [L907] retValue_acc = 1 [L908] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L622] int splverifierCounter ; [L623] int tmp ; [L624] int tmp___0 ; [L625] int tmp___1 ; [L626] int tmp___2 ; [L629] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L631] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L633] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L639] tmp = __VERIFIER_nondet_int() [L641] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L544] COND TRUE waterLevel < 2 [L545] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L649] tmp___0 = __VERIFIER_nondet_int() [L651] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L556] COND FALSE !(\read(methaneLevelCritical)) [L559] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L659] tmp___2 = __VERIFIER_nondet_int() [L661] COND TRUE \read(tmp___2) [L847] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L699] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L706] COND TRUE \read(systemActive) [L728] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L731] COND TRUE ! pumpRunning [L825] int retValue_acc ; [L826] int tmp ; [L827] int tmp___0 ; [L606] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L609] COND FALSE !(waterLevel < 2) [L613] retValue_acc = 0 [L614] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L831] tmp = isHighWaterSensorDry() [L833] COND FALSE !(\read(tmp)) [L836] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L838] retValue_acc = tmp___0 [L839] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L733] tmp = isHighWaterLevel() [L735] COND TRUE \read(tmp) [L756] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L853] int tmp ; [L854] int tmp___0 ; [L565] int retValue_acc ; [L568] retValue_acc = methaneLevelCritical [L569] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L858] tmp = isMethaneLevelCritical() [L860] COND TRUE \read(tmp) [L780] int retValue_acc ; [L783] retValue_acc = pumpRunning [L784] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L862] tmp___0 = isPumpRunning() [L864] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L516] 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, 78 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 579 SDtfs, 635 SDslu, 752 SDs, 0 SdLazy, 98 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 378 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 257 NumberOfCodeBlocks, 257 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 217 ConstructedInterpolants, 0 QuantifiedInterpolants, 10701 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...