/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_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:53:16,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:53:16,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:53:16,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:53:16,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:53:16,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:53:16,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:53:16,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:53:16,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:53:16,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:53:16,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:53:16,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:53:16,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:53:16,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:53:16,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:53:16,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:53:16,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:53:16,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:53:16,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:53:16,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:53:16,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:53:16,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:53:16,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:53:16,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:53:16,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:53:16,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:53:16,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:53:16,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:53:16,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:53:16,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:53:16,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:53:16,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:53:16,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:53:16,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:53:16,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:53:16,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:53:16,808 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:53:16,854 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:53:16,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:53:16,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:53:16,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:53:16,859 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:53:16,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:53:16,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:53:16,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:53:16,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:53:16,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:53:16,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:53:16,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:53:16,862 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:53:16,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:53:16,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:53:16,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:53:16,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:53:16,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:53:16,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:53:16,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:53:16,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:53:16,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:53:16,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:53:16,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:53:16,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:53:16,864 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:53:17,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:53:17,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:53:17,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:53:17,320 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:53:17,321 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:53:17,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c [2020-12-22 06:53:17,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/482ac3a47/f897f78acb3845d3a204b46ea38126fa/FLAG96e842860 [2020-12-22 06:53:18,152 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:53:18,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c [2020-12-22 06:53:18,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/482ac3a47/f897f78acb3845d3a204b46ea38126fa/FLAG96e842860 [2020-12-22 06:53:18,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/482ac3a47/f897f78acb3845d3a204b46ea38126fa [2020-12-22 06:53:18,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:53:18,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:53:18,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:53:18,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:53:18,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:53:18,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:53:18" (1/1) ... [2020-12-22 06:53:18,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65d9aa89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:18, skipping insertion in model container [2020-12-22 06:53:18,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:53:18" (1/1) ... [2020-12-22 06:53:18,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:53:18,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:53:18,801 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_product37.cil.c[12699,12712] [2020-12-22 06:53:18,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:53:18,908 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:53:18,970 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_product37.cil.c[12699,12712] [2020-12-22 06:53:18,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:53:19,040 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:53:19,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19 WrapperNode [2020-12-22 06:53:19,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:53:19,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:53:19,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:53:19,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:53:19,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (1/1) ... [2020-12-22 06:53:19,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (1/1) ... [2020-12-22 06:53:19,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:53:19,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:53:19,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:53:19,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:53:19,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (1/1) ... [2020-12-22 06:53:19,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (1/1) ... [2020-12-22 06:53:19,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (1/1) ... [2020-12-22 06:53:19,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (1/1) ... [2020-12-22 06:53:19,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (1/1) ... [2020-12-22 06:53:19,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (1/1) ... [2020-12-22 06:53:19,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (1/1) ... [2020-12-22 06:53:19,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:53:19,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:53:19,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:53:19,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:53:19,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (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 06:53:19,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:53:19,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:53:19,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:53:19,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:53:20,557 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:53:20,558 INFO L299 CfgBuilder]: Removed 156 assume(true) statements. [2020-12-22 06:53:20,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:20 BoogieIcfgContainer [2020-12-22 06:53:20,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:53:20,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:53:20,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:53:20,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:53:20,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:53:18" (1/3) ... [2020-12-22 06:53:20,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9b9fde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:53:20, skipping insertion in model container [2020-12-22 06:53:20,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (2/3) ... [2020-12-22 06:53:20,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9b9fde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:53:20, skipping insertion in model container [2020-12-22 06:53:20,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:20" (3/3) ... [2020-12-22 06:53:20,569 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product37.cil.c [2020-12-22 06:53:20,576 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:53:20,581 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:53:20,601 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:53:20,632 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:53:20,632 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:53:20,632 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:53:20,632 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:53:20,632 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:53:20,632 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:53:20,633 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:53:20,633 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:53:20,650 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2020-12-22 06:53:20,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 06:53:20,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:20,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:20,658 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:20,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:20,664 INFO L82 PathProgramCache]: Analyzing trace with hash 2109695399, now seen corresponding path program 1 times [2020-12-22 06:53:20,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:20,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444691834] [2020-12-22 06:53:20,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:20,985 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 06:53:20,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444691834] [2020-12-22 06:53:20,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:20,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:20,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181508546] [2020-12-22 06:53:20,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:53:20,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:21,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:53:21,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:53:21,022 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 2 states. [2020-12-22 06:53:21,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:21,092 INFO L93 Difference]: Finished difference Result 216 states and 329 transitions. [2020-12-22 06:53:21,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:53:21,094 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-22 06:53:21,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:21,120 INFO L225 Difference]: With dead ends: 216 [2020-12-22 06:53:21,121 INFO L226 Difference]: Without dead ends: 107 [2020-12-22 06:53:21,135 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 06:53:21,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-22 06:53:21,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-12-22 06:53:21,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-22 06:53:21,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 156 transitions. [2020-12-22 06:53:21,230 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 156 transitions. Word has length 16 [2020-12-22 06:53:21,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:21,231 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 156 transitions. [2020-12-22 06:53:21,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:53:21,231 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 156 transitions. [2020-12-22 06:53:21,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 06:53:21,235 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:21,235 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 06:53:21,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:53:21,237 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:21,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:21,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1093063509, now seen corresponding path program 1 times [2020-12-22 06:53:21,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:21,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474861012] [2020-12-22 06:53:21,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:21,454 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 06:53:21,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474861012] [2020-12-22 06:53:21,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:21,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:53:21,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124817143] [2020-12-22 06:53:21,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:21,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:21,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:21,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:21,461 INFO L87 Difference]: Start difference. First operand 107 states and 156 transitions. Second operand 3 states. [2020-12-22 06:53:21,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:21,489 INFO L93 Difference]: Finished difference Result 107 states and 156 transitions. [2020-12-22 06:53:21,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:21,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 06:53:21,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:21,493 INFO L225 Difference]: With dead ends: 107 [2020-12-22 06:53:21,494 INFO L226 Difference]: Without dead ends: 45 [2020-12-22 06:53:21,496 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 06:53:21,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-22 06:53:21,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-22 06:53:21,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 06:53:21,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2020-12-22 06:53:21,508 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 17 [2020-12-22 06:53:21,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:21,509 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2020-12-22 06:53:21,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:21,509 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2020-12-22 06:53:21,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 06:53:21,511 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:21,511 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 06:53:21,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:53:21,512 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:21,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:21,516 INFO L82 PathProgramCache]: Analyzing trace with hash -720159228, now seen corresponding path program 1 times [2020-12-22 06:53:21,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:21,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16097248] [2020-12-22 06:53:21,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:21,683 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 06:53:21,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16097248] [2020-12-22 06:53:21,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:21,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:53:21,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421224814] [2020-12-22 06:53:21,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:53:21,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:21,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:53:21,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:53:21,686 INFO L87 Difference]: Start difference. First operand 45 states and 65 transitions. Second operand 6 states. [2020-12-22 06:53:21,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:21,847 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2020-12-22 06:53:21,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:53:21,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-22 06:53:21,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:21,849 INFO L225 Difference]: With dead ends: 84 [2020-12-22 06:53:21,849 INFO L226 Difference]: Without dead ends: 45 [2020-12-22 06:53:21,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:53:21,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-22 06:53:21,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-22 06:53:21,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 06:53:21,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2020-12-22 06:53:21,857 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 22 [2020-12-22 06:53:21,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:21,857 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2020-12-22 06:53:21,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:53:21,857 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2020-12-22 06:53:21,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 06:53:21,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:21,858 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 06:53:21,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:53:21,859 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:21,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:21,860 INFO L82 PathProgramCache]: Analyzing trace with hash 2091202829, now seen corresponding path program 1 times [2020-12-22 06:53:21,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:21,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86581603] [2020-12-22 06:53:21,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:21,916 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 06:53:21,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86581603] [2020-12-22 06:53:21,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:21,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:21,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197418316] [2020-12-22 06:53:21,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:21,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:21,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:21,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:21,919 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand 3 states. [2020-12-22 06:53:21,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:21,974 INFO L93 Difference]: Finished difference Result 105 states and 152 transitions. [2020-12-22 06:53:21,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:21,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 06:53:21,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:21,976 INFO L225 Difference]: With dead ends: 105 [2020-12-22 06:53:21,976 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 06:53:21,977 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 06:53:21,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 06:53:21,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-12-22 06:53:21,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-22 06:53:21,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2020-12-22 06:53:21,986 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 24 [2020-12-22 06:53:21,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:21,987 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2020-12-22 06:53:21,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:21,987 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2020-12-22 06:53:21,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 06:53:21,988 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:21,988 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 06:53:21,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:53:21,989 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:21,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:21,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1013899842, now seen corresponding path program 1 times [2020-12-22 06:53:21,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:21,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450198624] [2020-12-22 06:53:21,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:22,099 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 06:53:22,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450198624] [2020-12-22 06:53:22,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:22,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:53:22,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273585695] [2020-12-22 06:53:22,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:22,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:22,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:22,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:22,105 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand 5 states. [2020-12-22 06:53:22,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:22,311 INFO L93 Difference]: Finished difference Result 171 states and 239 transitions. [2020-12-22 06:53:22,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:53:22,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-12-22 06:53:22,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:22,313 INFO L225 Difference]: With dead ends: 171 [2020-12-22 06:53:22,313 INFO L226 Difference]: Without dead ends: 113 [2020-12-22 06:53:22,314 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 06:53:22,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-22 06:53:22,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 70. [2020-12-22 06:53:22,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-22 06:53:22,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2020-12-22 06:53:22,323 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 30 [2020-12-22 06:53:22,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:22,324 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2020-12-22 06:53:22,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:22,324 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2020-12-22 06:53:22,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 06:53:22,325 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:22,325 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 06:53:22,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:53:22,326 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:22,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:22,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1648611201, now seen corresponding path program 1 times [2020-12-22 06:53:22,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:22,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225638919] [2020-12-22 06:53:22,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:22,403 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 06:53:22,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225638919] [2020-12-22 06:53:22,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:22,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:53:22,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435677585] [2020-12-22 06:53:22,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:22,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:22,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:22,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:22,406 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand 5 states. [2020-12-22 06:53:22,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:22,560 INFO L93 Difference]: Finished difference Result 344 states and 483 transitions. [2020-12-22 06:53:22,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:53:22,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-12-22 06:53:22,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:22,563 INFO L225 Difference]: With dead ends: 344 [2020-12-22 06:53:22,563 INFO L226 Difference]: Without dead ends: 280 [2020-12-22 06:53:22,564 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 06:53:22,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-12-22 06:53:22,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 128. [2020-12-22 06:53:22,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-22 06:53:22,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 175 transitions. [2020-12-22 06:53:22,586 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 175 transitions. Word has length 30 [2020-12-22 06:53:22,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:22,586 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 175 transitions. [2020-12-22 06:53:22,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:22,587 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 175 transitions. [2020-12-22 06:53:22,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:22,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:22,588 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 06:53:22,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:53:22,589 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:22,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:22,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1974587593, now seen corresponding path program 1 times [2020-12-22 06:53:22,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:22,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229392078] [2020-12-22 06:53:22,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:22,654 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 06:53:22,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229392078] [2020-12-22 06:53:22,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:22,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:53:22,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268638864] [2020-12-22 06:53:22,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:22,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:22,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:22,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:22,657 INFO L87 Difference]: Start difference. First operand 128 states and 175 transitions. Second operand 5 states. [2020-12-22 06:53:22,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:22,860 INFO L93 Difference]: Finished difference Result 366 states and 502 transitions. [2020-12-22 06:53:22,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:53:22,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-22 06:53:22,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:22,863 INFO L225 Difference]: With dead ends: 366 [2020-12-22 06:53:22,863 INFO L226 Difference]: Without dead ends: 364 [2020-12-22 06:53:22,864 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 06:53:22,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-12-22 06:53:22,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 128. [2020-12-22 06:53:22,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-22 06:53:22,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 174 transitions. [2020-12-22 06:53:22,882 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 174 transitions. Word has length 31 [2020-12-22 06:53:22,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:22,883 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 174 transitions. [2020-12-22 06:53:22,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:22,883 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 174 transitions. [2020-12-22 06:53:22,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:22,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:22,884 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 06:53:22,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:53:22,885 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:22,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:22,885 INFO L82 PathProgramCache]: Analyzing trace with hash -735158350, now seen corresponding path program 1 times [2020-12-22 06:53:22,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:22,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037765566] [2020-12-22 06:53:22,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:22,960 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 06:53:22,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037765566] [2020-12-22 06:53:22,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:22,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:53:22,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798278234] [2020-12-22 06:53:22,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:53:22,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:22,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:53:22,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:53:22,963 INFO L87 Difference]: Start difference. First operand 128 states and 174 transitions. Second operand 6 states. [2020-12-22 06:53:23,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:23,107 INFO L93 Difference]: Finished difference Result 346 states and 466 transitions. [2020-12-22 06:53:23,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:53:23,108 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-12-22 06:53:23,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:23,110 INFO L225 Difference]: With dead ends: 346 [2020-12-22 06:53:23,110 INFO L226 Difference]: Without dead ends: 224 [2020-12-22 06:53:23,111 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 06:53:23,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-22 06:53:23,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 136. [2020-12-22 06:53:23,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-12-22 06:53:23,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 182 transitions. [2020-12-22 06:53:23,128 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 182 transitions. Word has length 31 [2020-12-22 06:53:23,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:23,128 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 182 transitions. [2020-12-22 06:53:23,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:53:23,128 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 182 transitions. [2020-12-22 06:53:23,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:23,129 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:23,129 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 06:53:23,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:53:23,130 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:23,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:23,131 INFO L82 PathProgramCache]: Analyzing trace with hash -476992912, now seen corresponding path program 1 times [2020-12-22 06:53:23,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:23,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158294314] [2020-12-22 06:53:23,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:23,174 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 06:53:23,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158294314] [2020-12-22 06:53:23,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:23,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:23,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26065395] [2020-12-22 06:53:23,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:23,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:23,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:23,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:23,177 INFO L87 Difference]: Start difference. First operand 136 states and 182 transitions. Second operand 3 states. [2020-12-22 06:53:23,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:23,218 INFO L93 Difference]: Finished difference Result 316 states and 422 transitions. [2020-12-22 06:53:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:23,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-12-22 06:53:23,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:23,221 INFO L225 Difference]: With dead ends: 316 [2020-12-22 06:53:23,221 INFO L226 Difference]: Without dead ends: 186 [2020-12-22 06:53:23,222 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 06:53:23,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-12-22 06:53:23,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-12-22 06:53:23,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-12-22 06:53:23,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 242 transitions. [2020-12-22 06:53:23,243 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 242 transitions. Word has length 31 [2020-12-22 06:53:23,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:23,244 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 242 transitions. [2020-12-22 06:53:23,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:23,244 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 242 transitions. [2020-12-22 06:53:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 06:53:23,245 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:23,245 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 06:53:23,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:53:23,246 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:23,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:23,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1705214514, now seen corresponding path program 1 times [2020-12-22 06:53:23,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:23,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221186828] [2020-12-22 06:53:23,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:53:23,313 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:53:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:53:23,372 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:53:23,418 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:53:23,419 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:53:23,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:53:23,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:53:23 BoogieIcfgContainer [2020-12-22 06:53:23,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:53:23,557 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:53:23,557 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:53:23,557 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:53:23,562 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:20" (3/4) ... [2020-12-22 06:53:23,565 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:53:23,718 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec1_product37.cil.c-witness.graphml [2020-12-22 06:53:23,718 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:53:23,726 INFO L168 Benchmark]: Toolchain (without parser) took 5291.34 ms. Allocated memory was 152.0 MB in the beginning and 198.2 MB in the end (delta: 46.1 MB). Free memory was 126.1 MB in the beginning and 160.7 MB in the end (delta: -34.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:23,726 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 152.0 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:53:23,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 605.68 ms. Allocated memory is still 152.0 MB. Free memory was 125.9 MB in the beginning and 105.4 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:23,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 131.67 ms. Allocated memory is still 152.0 MB. Free memory was 105.2 MB in the beginning and 101.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:23,728 INFO L168 Benchmark]: Boogie Preprocessor took 100.84 ms. Allocated memory is still 152.0 MB. Free memory was 101.7 MB in the beginning and 132.9 MB in the end (delta: -31.3 MB). Peak memory consumption was 7.6 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:23,731 INFO L168 Benchmark]: RCFGBuilder took 1282.59 ms. Allocated memory is still 152.0 MB. Free memory was 132.9 MB in the beginning and 71.0 MB in the end (delta: 62.0 MB). Peak memory consumption was 61.9 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:23,732 INFO L168 Benchmark]: TraceAbstraction took 2994.34 ms. Allocated memory was 152.0 MB in the beginning and 198.2 MB in the end (delta: 46.1 MB). Free memory was 70.4 MB in the beginning and 174.3 MB in the end (delta: -103.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:23,732 INFO L168 Benchmark]: Witness Printer took 161.93 ms. Allocated memory is still 198.2 MB. Free memory was 173.8 MB in the beginning and 160.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:23,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 152.0 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 605.68 ms. Allocated memory is still 152.0 MB. Free memory was 125.9 MB in the beginning and 105.4 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 131.67 ms. Allocated memory is still 152.0 MB. Free memory was 105.2 MB in the beginning and 101.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 100.84 ms. Allocated memory is still 152.0 MB. Free memory was 101.7 MB in the beginning and 132.9 MB in the end (delta: -31.3 MB). Peak memory consumption was 7.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1282.59 ms. Allocated memory is still 152.0 MB. Free memory was 132.9 MB in the beginning and 71.0 MB in the end (delta: 62.0 MB). Peak memory consumption was 61.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2994.34 ms. Allocated memory was 152.0 MB in the beginning and 198.2 MB in the end (delta: 46.1 MB). Free memory was 70.4 MB in the beginning and 174.3 MB in the end (delta: -103.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 8.0 GB. * Witness Printer took 161.93 ms. Allocated memory is still 198.2 MB. Free memory was 173.8 MB in the beginning and 160.7 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: 545]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L408] int cleanupTimeShifts = 4; [L590] int pumpRunning = 0; [L591] int systemActive = 1; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L489] int retValue_acc ; [L490] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L576] int retValue_acc ; [L579] retValue_acc = 1 [L580] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L496] tmp = valid_product() [L498] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L769] int splverifierCounter ; [L770] int tmp ; [L771] int tmp___0 ; [L772] int tmp___1 ; [L773] int tmp___2 ; [L776] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L778] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L780] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L786] tmp = __VERIFIER_nondet_int() [L788] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L796] tmp___0 = __VERIFIER_nondet_int() [L798] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L864] COND FALSE !(\read(methaneLevelCritical)) [L867] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L806] tmp___2 = __VERIFIER_nondet_int() [L808] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L597] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L604] COND TRUE \read(systemActive) [L652] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L655] COND FALSE !(\read(pumpRunning)) [L626] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L629] COND TRUE ! pumpRunning [L749] int retValue_acc ; [L750] int tmp ; [L751] int tmp___0 ; [L914] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L917] COND FALSE !(waterLevel < 2) [L921] retValue_acc = 0 [L922] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L755] tmp = isHighWaterSensorDry() [L757] COND FALSE !(\read(tmp)) [L760] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L762] retValue_acc = tmp___0 [L763] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L631] tmp = isHighWaterLevel() [L633] COND TRUE \read(tmp) [L680] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L516] int tmp ; [L517] int tmp___0 ; [L873] int retValue_acc ; [L876] retValue_acc = methaneLevelCritical [L877] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L521] tmp = isMethaneLevelCritical() [L523] COND TRUE \read(tmp) [L704] int retValue_acc ; [L707] retValue_acc = pumpRunning [L708] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L525] tmp___0 = isPumpRunning() [L527] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L545] 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, 111 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 783 SDtfs, 1159 SDslu, 984 SDs, 0 SdLazy, 156 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred 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, 521 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 223 ConstructedInterpolants, 0 QuantifiedInterpolants, 12402 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...