/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_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:53:34,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:53:34,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:53:34,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:53:34,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:53:34,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:53:34,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:53:34,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:53:34,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:53:34,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:53:34,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:53:34,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:53:34,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:53:34,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:53:34,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:53:34,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:53:34,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:53:34,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:53:34,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:53:34,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:53:34,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:53:34,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:53:34,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:53:34,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:53:34,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:53:34,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:53:34,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:53:34,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:53:34,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:53:34,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:53:34,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:53:34,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:53:34,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:53:34,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:53:34,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:53:34,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:53:34,800 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:53:34,831 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:53:34,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:53:34,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:53:34,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:53:34,833 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:53:34,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:53:34,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:53:34,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:53:34,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:53:34,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:53:34,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:53:34,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:53:34,835 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:53:34,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:53:34,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:53:34,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:53:34,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:53:34,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:53:34,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:53:34,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:53:34,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:53:34,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:53:34,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:53:34,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:53:34,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:53:34,838 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:53:35,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:53:35,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:53:35,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:53:35,282 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:53:35,286 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:53:35,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c [2020-12-22 06:53:35,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc9558050/04c66bfce35640a0a17c6f926d4a2887/FLAG02fde0348 [2020-12-22 06:53:36,118 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:53:36,128 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c [2020-12-22 06:53:36,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc9558050/04c66bfce35640a0a17c6f926d4a2887/FLAG02fde0348 [2020-12-22 06:53:36,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc9558050/04c66bfce35640a0a17c6f926d4a2887 [2020-12-22 06:53:36,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:53:36,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:53:36,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:53:36,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:53:36,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:53:36,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:53:36" (1/1) ... [2020-12-22 06:53:36,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@351b9361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:36, skipping insertion in model container [2020-12-22 06:53:36,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:53:36" (1/1) ... [2020-12-22 06:53:36,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:53:36,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:53:36,722 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_product50.cil.c[5930,5943] [2020-12-22 06:53:36,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:53:36,848 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:53:36,883 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_product50.cil.c[5930,5943] [2020-12-22 06:53:36,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:53:36,991 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:53:36,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:36 WrapperNode [2020-12-22 06:53:36,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:53:36,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:53:36,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:53:36,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:53:37,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:36" (1/1) ... [2020-12-22 06:53:37,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:36" (1/1) ... [2020-12-22 06:53:37,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:53:37,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:53:37,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:53:37,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:53:37,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:36" (1/1) ... [2020-12-22 06:53:37,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:36" (1/1) ... [2020-12-22 06:53:37,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:36" (1/1) ... [2020-12-22 06:53:37,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:36" (1/1) ... [2020-12-22 06:53:37,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:36" (1/1) ... [2020-12-22 06:53:37,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:36" (1/1) ... [2020-12-22 06:53:37,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:36" (1/1) ... [2020-12-22 06:53:37,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:53:37,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:53:37,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:53:37,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:53:37,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:36" (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 06:53:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:53:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:53:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:53:37,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:53:38,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:53:38,434 INFO L299 CfgBuilder]: Removed 158 assume(true) statements. [2020-12-22 06:53:38,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:38 BoogieIcfgContainer [2020-12-22 06:53:38,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:53:38,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:53:38,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:53:38,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:53:38,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:53:36" (1/3) ... [2020-12-22 06:53:38,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dd0060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:53:38, skipping insertion in model container [2020-12-22 06:53:38,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:36" (2/3) ... [2020-12-22 06:53:38,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23dd0060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:53:38, skipping insertion in model container [2020-12-22 06:53:38,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:38" (3/3) ... [2020-12-22 06:53:38,446 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product50.cil.c [2020-12-22 06:53:38,453 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:53:38,459 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:53:38,480 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:53:38,510 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:53:38,510 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:53:38,510 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:53:38,510 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:53:38,511 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:53:38,511 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:53:38,511 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:53:38,511 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:53:38,531 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states. [2020-12-22 06:53:38,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 06:53:38,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:38,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:38,540 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:38,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:38,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1800894747, now seen corresponding path program 1 times [2020-12-22 06:53:38,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:38,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880065128] [2020-12-22 06:53:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:38,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:53:38,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880065128] [2020-12-22 06:53:38,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:38,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:38,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99553746] [2020-12-22 06:53:38,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:53:38,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:38,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:53:38,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:53:38,963 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 2 states. [2020-12-22 06:53:39,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:39,029 INFO L93 Difference]: Finished difference Result 228 states and 347 transitions. [2020-12-22 06:53:39,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:53:39,030 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-22 06:53:39,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:39,052 INFO L225 Difference]: With dead ends: 228 [2020-12-22 06:53:39,053 INFO L226 Difference]: Without dead ends: 113 [2020-12-22 06:53:39,057 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 06:53:39,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-22 06:53:39,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-12-22 06:53:39,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-12-22 06:53:39,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2020-12-22 06:53:39,106 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 165 transitions. Word has length 16 [2020-12-22 06:53:39,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:39,107 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 165 transitions. [2020-12-22 06:53:39,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:53:39,107 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 165 transitions. [2020-12-22 06:53:39,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 06:53:39,108 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:39,109 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 06:53:39,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:53:39,109 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:39,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:39,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1447315652, now seen corresponding path program 1 times [2020-12-22 06:53:39,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:39,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877200311] [2020-12-22 06:53:39,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:39,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:53:39,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877200311] [2020-12-22 06:53:39,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:39,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:53:39,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333329556] [2020-12-22 06:53:39,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:39,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:39,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:39,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:39,261 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. Second operand 3 states. [2020-12-22 06:53:39,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:39,274 INFO L93 Difference]: Finished difference Result 113 states and 165 transitions. [2020-12-22 06:53:39,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:39,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 06:53:39,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:39,276 INFO L225 Difference]: With dead ends: 113 [2020-12-22 06:53:39,276 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 06:53:39,278 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 06:53:39,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 06:53:39,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-22 06:53:39,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 06:53:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2020-12-22 06:53:39,284 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2020-12-22 06:53:39,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:39,285 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2020-12-22 06:53:39,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:39,285 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2020-12-22 06:53:39,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 06:53:39,286 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:39,286 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 06:53:39,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:53:39,287 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:39,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:39,288 INFO L82 PathProgramCache]: Analyzing trace with hash -230586389, now seen corresponding path program 1 times [2020-12-22 06:53:39,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:39,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780091068] [2020-12-22 06:53:39,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:39,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:53:39,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780091068] [2020-12-22 06:53:39,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:39,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:53:39,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104588333] [2020-12-22 06:53:39,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:39,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:39,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:39,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:39,424 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 5 states. [2020-12-22 06:53:39,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:39,475 INFO L93 Difference]: Finished difference Result 88 states and 130 transitions. [2020-12-22 06:53:39,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:53:39,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-12-22 06:53:39,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:39,477 INFO L225 Difference]: With dead ends: 88 [2020-12-22 06:53:39,477 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 06:53:39,478 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 06:53:39,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 06:53:39,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-22 06:53:39,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 06:53:39,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 67 transitions. [2020-12-22 06:53:39,485 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 67 transitions. Word has length 22 [2020-12-22 06:53:39,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:39,486 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 67 transitions. [2020-12-22 06:53:39,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:39,486 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 67 transitions. [2020-12-22 06:53:39,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 06:53:39,487 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:39,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:39,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:53:39,488 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:39,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:39,489 INFO L82 PathProgramCache]: Analyzing trace with hash -108421843, now seen corresponding path program 1 times [2020-12-22 06:53:39,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:39,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081844514] [2020-12-22 06:53:39,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:39,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:53:39,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081844514] [2020-12-22 06:53:39,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:39,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:39,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874098038] [2020-12-22 06:53:39,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:39,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:39,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:39,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:39,591 INFO L87 Difference]: Start difference. First operand 47 states and 67 transitions. Second operand 3 states. [2020-12-22 06:53:39,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:39,649 INFO L93 Difference]: Finished difference Result 109 states and 158 transitions. [2020-12-22 06:53:39,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:39,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 06:53:39,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:39,653 INFO L225 Difference]: With dead ends: 109 [2020-12-22 06:53:39,653 INFO L226 Difference]: Without dead ends: 68 [2020-12-22 06:53:39,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:39,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-22 06:53:39,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-12-22 06:53:39,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 06:53:39,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2020-12-22 06:53:39,673 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 24 [2020-12-22 06:53:39,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:39,674 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2020-12-22 06:53:39,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:39,674 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2020-12-22 06:53:39,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 06:53:39,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:39,676 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 06:53:39,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:53:39,677 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:39,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:39,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1619186466, now seen corresponding path program 1 times [2020-12-22 06:53:39,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:39,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069210454] [2020-12-22 06:53:39,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:39,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:53:39,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069210454] [2020-12-22 06:53:39,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:39,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:53:39,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949550397] [2020-12-22 06:53:39,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:39,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:39,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:39,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:39,824 INFO L87 Difference]: Start difference. First operand 66 states and 93 transitions. Second operand 5 states. [2020-12-22 06:53:39,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:39,898 INFO L93 Difference]: Finished difference Result 175 states and 245 transitions. [2020-12-22 06:53:39,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:53:39,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-12-22 06:53:39,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:39,902 INFO L225 Difference]: With dead ends: 175 [2020-12-22 06:53:39,902 INFO L226 Difference]: Without dead ends: 115 [2020-12-22 06:53:39,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:53:39,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-22 06:53:39,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 72. [2020-12-22 06:53:39,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-22 06:53:39,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 99 transitions. [2020-12-22 06:53:39,923 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 99 transitions. Word has length 30 [2020-12-22 06:53:39,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:39,924 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 99 transitions. [2020-12-22 06:53:39,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:39,924 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 99 transitions. [2020-12-22 06:53:39,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 06:53:39,925 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:39,925 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 06:53:39,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:53:39,926 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:39,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:39,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1043324577, now seen corresponding path program 1 times [2020-12-22 06:53:39,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:39,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223198914] [2020-12-22 06:53:39,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:40,035 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 06:53:40,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223198914] [2020-12-22 06:53:40,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:40,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:53:40,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559397068] [2020-12-22 06:53:40,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:40,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:40,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:40,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:40,040 INFO L87 Difference]: Start difference. First operand 72 states and 99 transitions. Second operand 5 states. [2020-12-22 06:53:40,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:40,133 INFO L93 Difference]: Finished difference Result 382 states and 538 transitions. [2020-12-22 06:53:40,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:53:40,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-12-22 06:53:40,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:40,136 INFO L225 Difference]: With dead ends: 382 [2020-12-22 06:53:40,136 INFO L226 Difference]: Without dead ends: 316 [2020-12-22 06:53:40,140 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 06:53:40,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-12-22 06:53:40,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 132. [2020-12-22 06:53:40,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-22 06:53:40,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 181 transitions. [2020-12-22 06:53:40,180 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 181 transitions. Word has length 30 [2020-12-22 06:53:40,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:40,181 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 181 transitions. [2020-12-22 06:53:40,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:40,181 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 181 transitions. [2020-12-22 06:53:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:40,185 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:40,186 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 06:53:40,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:53:40,186 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:40,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:40,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1715093079, now seen corresponding path program 1 times [2020-12-22 06:53:40,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:40,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407450259] [2020-12-22 06:53:40,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:40,313 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 06:53:40,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407450259] [2020-12-22 06:53:40,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:40,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:53:40,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497100302] [2020-12-22 06:53:40,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:40,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:40,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:40,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:40,317 INFO L87 Difference]: Start difference. First operand 132 states and 181 transitions. Second operand 5 states. [2020-12-22 06:53:40,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:40,443 INFO L93 Difference]: Finished difference Result 378 states and 520 transitions. [2020-12-22 06:53:40,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:53:40,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-22 06:53:40,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:40,448 INFO L225 Difference]: With dead ends: 378 [2020-12-22 06:53:40,448 INFO L226 Difference]: Without dead ends: 376 [2020-12-22 06:53:40,449 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 06:53:40,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-12-22 06:53:40,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 132. [2020-12-22 06:53:40,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-22 06:53:40,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 180 transitions. [2020-12-22 06:53:40,476 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 180 transitions. Word has length 31 [2020-12-22 06:53:40,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:40,476 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 180 transitions. [2020-12-22 06:53:40,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:40,477 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 180 transitions. [2020-12-22 06:53:40,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:40,483 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:40,483 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 06:53:40,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:53:40,484 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:40,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:40,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1340444974, now seen corresponding path program 1 times [2020-12-22 06:53:40,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:40,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821882847] [2020-12-22 06:53:40,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:40,569 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 06:53:40,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821882847] [2020-12-22 06:53:40,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:40,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:53:40,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714310237] [2020-12-22 06:53:40,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:53:40,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:40,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:53:40,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:53:40,572 INFO L87 Difference]: Start difference. First operand 132 states and 180 transitions. Second operand 6 states. [2020-12-22 06:53:40,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:40,673 INFO L93 Difference]: Finished difference Result 354 states and 478 transitions. [2020-12-22 06:53:40,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:53:40,673 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-12-22 06:53:40,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:40,676 INFO L225 Difference]: With dead ends: 354 [2020-12-22 06:53:40,676 INFO L226 Difference]: Without dead ends: 228 [2020-12-22 06:53:40,678 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 06:53:40,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-12-22 06:53:40,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 140. [2020-12-22 06:53:40,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-22 06:53:40,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 188 transitions. [2020-12-22 06:53:40,694 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 188 transitions. Word has length 31 [2020-12-22 06:53:40,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:40,694 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 188 transitions. [2020-12-22 06:53:40,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:53:40,694 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 188 transitions. [2020-12-22 06:53:40,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:40,696 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:40,696 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 06:53:40,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:53:40,697 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:40,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:40,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1082279536, now seen corresponding path program 1 times [2020-12-22 06:53:40,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:40,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197514257] [2020-12-22 06:53:40,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:40,751 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 06:53:40,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197514257] [2020-12-22 06:53:40,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:40,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:40,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264960556] [2020-12-22 06:53:40,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:40,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:40,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:40,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:40,760 INFO L87 Difference]: Start difference. First operand 140 states and 188 transitions. Second operand 3 states. [2020-12-22 06:53:40,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:40,801 INFO L93 Difference]: Finished difference Result 324 states and 434 transitions. [2020-12-22 06:53:40,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:40,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-12-22 06:53:40,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:40,803 INFO L225 Difference]: With dead ends: 324 [2020-12-22 06:53:40,804 INFO L226 Difference]: Without dead ends: 190 [2020-12-22 06:53:40,804 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 06:53:40,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-12-22 06:53:40,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-12-22 06:53:40,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-12-22 06:53:40,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 248 transitions. [2020-12-22 06:53:40,830 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 248 transitions. Word has length 31 [2020-12-22 06:53:40,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:40,836 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 248 transitions. [2020-12-22 06:53:40,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:40,837 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 248 transitions. [2020-12-22 06:53:40,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 06:53:40,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:40,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:40,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:53:40,839 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:40,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:40,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1099927890, now seen corresponding path program 1 times [2020-12-22 06:53:40,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:40,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26304480] [2020-12-22 06:53:40,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:53:40,931 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:53:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:53:41,011 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:53:41,101 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:53:41,101 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:53:41,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:53:41,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:53:41 BoogieIcfgContainer [2020-12-22 06:53:41,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:53:41,224 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:53:41,224 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:53:41,224 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:53:41,225 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:38" (3/4) ... [2020-12-22 06:53:41,228 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:53:41,360 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec1_product50.cil.c-witness.graphml [2020-12-22 06:53:41,361 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:53:41,363 INFO L168 Benchmark]: Toolchain (without parser) took 4962.10 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 130.4 MB in the beginning and 136.6 MB in the end (delta: -6.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:41,363 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 127.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:53:41,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 588.37 ms. Allocated memory is still 155.2 MB. Free memory was 130.2 MB in the beginning and 108.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:41,365 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.59 ms. Allocated memory is still 155.2 MB. Free memory was 108.5 MB in the beginning and 105.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:41,365 INFO L168 Benchmark]: Boogie Preprocessor took 50.80 ms. Allocated memory is still 155.2 MB. Free memory was 105.0 MB in the beginning and 102.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:41,366 INFO L168 Benchmark]: RCFGBuilder took 1303.89 ms. Allocated memory is still 155.2 MB. Free memory was 102.2 MB in the beginning and 76.7 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:41,366 INFO L168 Benchmark]: TraceAbstraction took 2783.33 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 76.2 MB in the beginning and 149.7 MB in the end (delta: -73.5 MB). Peak memory consumption was 50.2 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:41,367 INFO L168 Benchmark]: Witness Printer took 137.37 ms. Allocated memory is still 186.6 MB. Free memory was 149.7 MB in the beginning and 136.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:41,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 127.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 588.37 ms. Allocated memory is still 155.2 MB. Free memory was 130.2 MB in the beginning and 108.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 86.59 ms. Allocated memory is still 155.2 MB. Free memory was 108.5 MB in the beginning and 105.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.80 ms. Allocated memory is still 155.2 MB. Free memory was 105.0 MB in the beginning and 102.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1303.89 ms. Allocated memory is still 155.2 MB. Free memory was 102.2 MB in the beginning and 76.7 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2783.33 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 76.2 MB in the beginning and 149.7 MB in the end (delta: -73.5 MB). Peak memory consumption was 50.2 MB. Max. memory is 8.0 GB. * Witness Printer took 137.37 ms. Allocated memory is still 186.6 MB. Free memory was 149.7 MB in the beginning and 136.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 390]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L78] int waterLevel = 1; [L79] int methaneLevelCritical = 0; [L181] int cleanupTimeShifts = 4; [L397] int pumpRunning = 0; [L398] int systemActive = 1; [L771] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L260] int retValue_acc ; [L261] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L309] int retValue_acc ; [L312] retValue_acc = 1 [L313] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L267] tmp = valid_product() [L269] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L320] int splverifierCounter ; [L321] int tmp ; [L322] int tmp___0 ; [L323] int tmp___1 ; [L324] int tmp___2 ; [L327] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L329] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L331] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L337] tmp = __VERIFIER_nondet_int() [L339] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L96] COND TRUE waterLevel < 2 [L97] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L347] tmp___0 = __VERIFIER_nondet_int() [L349] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L108] COND FALSE !(\read(methaneLevelCritical)) [L111] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L357] tmp___2 = __VERIFIER_nondet_int() [L359] COND TRUE \read(tmp___2) [L597] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L404] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L411] COND TRUE \read(systemActive) [L459] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L462] COND FALSE !(\read(pumpRunning)) [L433] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L436] COND TRUE ! pumpRunning [L556] int retValue_acc ; [L557] int tmp ; [L558] int tmp___0 ; [L158] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L161] COND FALSE !(waterLevel < 2) [L165] retValue_acc = 0 [L166] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L562] tmp = isHighWaterSensorDry() [L564] COND FALSE !(\read(tmp)) [L567] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L569] retValue_acc = tmp___0 [L570] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L438] tmp = isHighWaterLevel() [L440] COND TRUE \read(tmp) [L487] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L46] int tmp ; [L47] int tmp___0 ; [L117] int retValue_acc ; [L120] retValue_acc = methaneLevelCritical [L121] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L51] tmp = isMethaneLevelCritical() [L53] COND TRUE \read(tmp) [L511] int retValue_acc ; [L514] retValue_acc = pumpRunning [L515] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L390] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 117 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 826 SDtfs, 1232 SDslu, 1058 SDs, 0 SdLazy, 146 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 561 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 223 ConstructedInterpolants, 0 QuantifiedInterpolants, 11751 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...