/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:56:35,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:56:35,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:56:35,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:56:35,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:56:35,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:56:35,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:56:35,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:56:35,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:56:35,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:56:35,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:56:35,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:56:35,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:56:35,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:56:35,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:56:35,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:56:35,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:56:35,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:56:35,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:56:35,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:56:35,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:56:35,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:56:35,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:56:35,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:56:35,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:56:35,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:56:35,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:56:35,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:56:35,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:56:35,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:56:35,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:56:35,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:56:35,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:56:35,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:56:35,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:56:35,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:56:35,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:56:35,643 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:56:35,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:56:35,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:56:35,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:56:35,645 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:56:35,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:56:35,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:56:35,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:56:35,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:56:35,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:56:35,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:56:35,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:56:35,647 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:56:35,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:56:35,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:56:35,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:56:35,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:56:35,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:56:35,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:56:35,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:56:35,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:56:35,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:56:35,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:56:35,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:56:35,650 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:56:35,650 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:56:36,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:56:36,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:56:36,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:56:36,095 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:56:36,096 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:56:36,097 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2020-12-22 06:56:36,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42461e1f6/a198eadef2f34aecbea503a3f6fc0d69/FLAG72ab6fc6f [2020-12-22 06:56:36,929 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:56:36,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2020-12-22 06:56:36,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42461e1f6/a198eadef2f34aecbea503a3f6fc0d69/FLAG72ab6fc6f [2020-12-22 06:56:37,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42461e1f6/a198eadef2f34aecbea503a3f6fc0d69 [2020-12-22 06:56:37,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:56:37,181 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:56:37,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:56:37,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:56:37,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:56:37,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:37,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2241586a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37, skipping insertion in model container [2020-12-22 06:56:37,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:37,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:56:37,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:56:37,471 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c[5076,5089] [2020-12-22 06:56:37,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:56:37,646 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:56:37,725 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c[5076,5089] [2020-12-22 06:56:37,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:56:37,879 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:56:37,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37 WrapperNode [2020-12-22 06:56:37,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:56:37,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:56:37,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:56:37,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:56:37,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:37,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:38,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:56:38,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:56:38,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:56:38,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:56:38,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:38,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:38,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:38,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:38,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:38,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:38,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:38,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:56:38,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:56:38,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:56:38,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:56:38,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:56:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:56:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:56:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:56:38,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:56:39,444 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:56:39,444 INFO L299 CfgBuilder]: Removed 162 assume(true) statements. [2020-12-22 06:56:39,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:39 BoogieIcfgContainer [2020-12-22 06:56:39,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:56:39,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:56:39,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:56:39,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:56:39,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:56:37" (1/3) ... [2020-12-22 06:56:39,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3866f15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:39, skipping insertion in model container [2020-12-22 06:56:39,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (2/3) ... [2020-12-22 06:56:39,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3866f15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:39, skipping insertion in model container [2020-12-22 06:56:39,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:39" (3/3) ... [2020-12-22 06:56:39,467 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2020-12-22 06:56:39,474 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:56:39,480 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:56:39,501 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:56:39,534 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:56:39,534 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:56:39,534 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:56:39,534 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:56:39,535 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:56:39,535 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:56:39,535 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:56:39,535 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:56:39,556 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states. [2020-12-22 06:56:39,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 06:56:39,563 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:39,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:39,564 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:39,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:39,571 INFO L82 PathProgramCache]: Analyzing trace with hash 2074315904, now seen corresponding path program 1 times [2020-12-22 06:56:39,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:39,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815549738] [2020-12-22 06:56:39,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:39,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815549738] [2020-12-22 06:56:39,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:39,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:56:39,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408200797] [2020-12-22 06:56:39,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:56:39,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:39,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:56:39,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:56:39,992 INFO L87 Difference]: Start difference. First operand 113 states. Second operand 2 states. [2020-12-22 06:56:40,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:40,043 INFO L93 Difference]: Finished difference Result 220 states and 335 transitions. [2020-12-22 06:56:40,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:56:40,044 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-22 06:56:40,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:40,058 INFO L225 Difference]: With dead ends: 220 [2020-12-22 06:56:40,058 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 06:56:40,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:56:40,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 06:56:40,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-12-22 06:56:40,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-22 06:56:40,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2020-12-22 06:56:40,117 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2020-12-22 06:56:40,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:40,118 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2020-12-22 06:56:40,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:56:40,118 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2020-12-22 06:56:40,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 06:56:40,119 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:40,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:40,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:56:40,120 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:40,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:40,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1027559007, now seen corresponding path program 1 times [2020-12-22 06:56:40,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:40,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141274408] [2020-12-22 06:56:40,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:40,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:40,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141274408] [2020-12-22 06:56:40,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:40,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:56:40,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460115432] [2020-12-22 06:56:40,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:40,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:40,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:40,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:40,290 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 3 states. [2020-12-22 06:56:40,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:40,306 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2020-12-22 06:56:40,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:40,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 06:56:40,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:40,308 INFO L225 Difference]: With dead ends: 109 [2020-12-22 06:56:40,308 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 06:56:40,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:40,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 06:56:40,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-22 06:56:40,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 06:56:40,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2020-12-22 06:56:40,317 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2020-12-22 06:56:40,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:40,317 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2020-12-22 06:56:40,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:40,317 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2020-12-22 06:56:40,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 06:56:40,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:40,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:40,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:56:40,319 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:40,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:40,320 INFO L82 PathProgramCache]: Analyzing trace with hash 109011716, now seen corresponding path program 1 times [2020-12-22 06:56:40,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:40,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145778608] [2020-12-22 06:56:40,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:40,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:40,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145778608] [2020-12-22 06:56:40,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:40,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:56:40,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146532705] [2020-12-22 06:56:40,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:40,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:40,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:40,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:40,472 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 3 states. [2020-12-22 06:56:40,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:40,549 INFO L93 Difference]: Finished difference Result 129 states and 192 transitions. [2020-12-22 06:56:40,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:40,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 06:56:40,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:40,557 INFO L225 Difference]: With dead ends: 129 [2020-12-22 06:56:40,557 INFO L226 Difference]: Without dead ends: 88 [2020-12-22 06:56:40,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:40,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-22 06:56:40,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-12-22 06:56:40,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 06:56:40,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 125 transitions. [2020-12-22 06:56:40,571 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 125 transitions. Word has length 22 [2020-12-22 06:56:40,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:40,571 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 125 transitions. [2020-12-22 06:56:40,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:40,572 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 125 transitions. [2020-12-22 06:56:40,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 06:56:40,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:40,573 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 06:56:40,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:56:40,574 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:40,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:40,575 INFO L82 PathProgramCache]: Analyzing trace with hash 60563277, now seen corresponding path program 1 times [2020-12-22 06:56:40,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:40,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749912673] [2020-12-22 06:56:40,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:40,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749912673] [2020-12-22 06:56:40,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:40,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:56:40,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730133143] [2020-12-22 06:56:40,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:40,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:40,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:40,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:40,662 INFO L87 Difference]: Start difference. First operand 84 states and 125 transitions. Second operand 3 states. [2020-12-22 06:56:40,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:40,765 INFO L93 Difference]: Finished difference Result 203 states and 306 transitions. [2020-12-22 06:56:40,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:40,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 06:56:40,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:40,767 INFO L225 Difference]: With dead ends: 203 [2020-12-22 06:56:40,767 INFO L226 Difference]: Without dead ends: 125 [2020-12-22 06:56:40,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:40,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-22 06:56:40,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2020-12-22 06:56:40,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-12-22 06:56:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 179 transitions. [2020-12-22 06:56:40,787 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 179 transitions. Word has length 24 [2020-12-22 06:56:40,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:40,788 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 179 transitions. [2020-12-22 06:56:40,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:40,788 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 179 transitions. [2020-12-22 06:56:40,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 06:56:40,789 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:40,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:40,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:56:40,790 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:40,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:40,790 INFO L82 PathProgramCache]: Analyzing trace with hash -445763815, now seen corresponding path program 1 times [2020-12-22 06:56:40,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:40,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850020106] [2020-12-22 06:56:40,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:40,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850020106] [2020-12-22 06:56:40,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:40,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:56:40,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975795434] [2020-12-22 06:56:40,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:40,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:40,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:40,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:40,935 INFO L87 Difference]: Start difference. First operand 123 states and 179 transitions. Second operand 5 states. [2020-12-22 06:56:41,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:41,122 INFO L93 Difference]: Finished difference Result 439 states and 645 transitions. [2020-12-22 06:56:41,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:41,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-12-22 06:56:41,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:41,129 INFO L225 Difference]: With dead ends: 439 [2020-12-22 06:56:41,132 INFO L226 Difference]: Without dead ends: 322 [2020-12-22 06:56:41,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:41,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-12-22 06:56:41,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 206. [2020-12-22 06:56:41,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-22 06:56:41,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 290 transitions. [2020-12-22 06:56:41,208 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 290 transitions. Word has length 25 [2020-12-22 06:56:41,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:41,208 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 290 transitions. [2020-12-22 06:56:41,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:41,208 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 290 transitions. [2020-12-22 06:56:41,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 06:56:41,213 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:41,213 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] [2020-12-22 06:56:41,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:56:41,214 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:41,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:41,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1889894491, now seen corresponding path program 1 times [2020-12-22 06:56:41,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:41,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328246427] [2020-12-22 06:56:41,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:41,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328246427] [2020-12-22 06:56:41,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:41,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:56:41,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409568984] [2020-12-22 06:56:41,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:41,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:41,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:41,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:41,350 INFO L87 Difference]: Start difference. First operand 206 states and 290 transitions. Second operand 5 states. [2020-12-22 06:56:41,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:41,637 INFO L93 Difference]: Finished difference Result 438 states and 630 transitions. [2020-12-22 06:56:41,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:56:41,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-22 06:56:41,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:41,645 INFO L225 Difference]: With dead ends: 438 [2020-12-22 06:56:41,645 INFO L226 Difference]: Without dead ends: 436 [2020-12-22 06:56:41,647 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 06:56:41,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-12-22 06:56:41,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 206. [2020-12-22 06:56:41,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-22 06:56:41,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 288 transitions. [2020-12-22 06:56:41,719 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 288 transitions. Word has length 26 [2020-12-22 06:56:41,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:41,720 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 288 transitions. [2020-12-22 06:56:41,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:41,720 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 288 transitions. [2020-12-22 06:56:41,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:56:41,722 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:41,722 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 06:56:41,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:56:41,725 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:41,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:41,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1724354492, now seen corresponding path program 1 times [2020-12-22 06:56:41,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:41,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323144081] [2020-12-22 06:56:41,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:41,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:41,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323144081] [2020-12-22 06:56:41,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:41,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:56:41,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116650859] [2020-12-22 06:56:41,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:56:41,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:41,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:56:41,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:56:41,802 INFO L87 Difference]: Start difference. First operand 206 states and 288 transitions. Second operand 4 states. [2020-12-22 06:56:41,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:41,940 INFO L93 Difference]: Finished difference Result 426 states and 607 transitions. [2020-12-22 06:56:41,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:56:41,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-12-22 06:56:41,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:41,943 INFO L225 Difference]: With dead ends: 426 [2020-12-22 06:56:41,943 INFO L226 Difference]: Without dead ends: 309 [2020-12-22 06:56:41,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:56:41,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-12-22 06:56:41,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 305. [2020-12-22 06:56:41,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-12-22 06:56:41,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 425 transitions. [2020-12-22 06:56:41,968 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 425 transitions. Word has length 31 [2020-12-22 06:56:41,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:41,969 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 425 transitions. [2020-12-22 06:56:41,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:56:41,969 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 425 transitions. [2020-12-22 06:56:41,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:56:41,971 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:41,971 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 06:56:41,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:56:41,971 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:41,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:41,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1982519930, now seen corresponding path program 1 times [2020-12-22 06:56:41,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:41,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566046241] [2020-12-22 06:56:41,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:42,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:42,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566046241] [2020-12-22 06:56:42,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:42,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:56:42,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003592406] [2020-12-22 06:56:42,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:56:42,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:42,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:56:42,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:56:42,034 INFO L87 Difference]: Start difference. First operand 305 states and 425 transitions. Second operand 4 states. [2020-12-22 06:56:42,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:42,141 INFO L93 Difference]: Finished difference Result 894 states and 1264 transitions. [2020-12-22 06:56:42,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:56:42,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-12-22 06:56:42,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:42,146 INFO L225 Difference]: With dead ends: 894 [2020-12-22 06:56:42,146 INFO L226 Difference]: Without dead ends: 676 [2020-12-22 06:56:42,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:42,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-12-22 06:56:42,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 305. [2020-12-22 06:56:42,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-12-22 06:56:42,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 421 transitions. [2020-12-22 06:56:42,177 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 421 transitions. Word has length 31 [2020-12-22 06:56:42,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:42,178 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 421 transitions. [2020-12-22 06:56:42,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:56:42,178 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 421 transitions. [2020-12-22 06:56:42,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:56:42,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:42,182 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 06:56:42,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:56:42,183 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:42,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:42,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1589492920, now seen corresponding path program 1 times [2020-12-22 06:56:42,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:42,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109180225] [2020-12-22 06:56:42,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:42,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:42,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109180225] [2020-12-22 06:56:42,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:42,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:42,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719268500] [2020-12-22 06:56:42,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:42,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:42,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:42,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:42,274 INFO L87 Difference]: Start difference. First operand 305 states and 421 transitions. Second operand 5 states. [2020-12-22 06:56:42,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:42,488 INFO L93 Difference]: Finished difference Result 673 states and 940 transitions. [2020-12-22 06:56:42,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:42,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-22 06:56:42,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:42,493 INFO L225 Difference]: With dead ends: 673 [2020-12-22 06:56:42,493 INFO L226 Difference]: Without dead ends: 455 [2020-12-22 06:56:42,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:42,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-12-22 06:56:42,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 336. [2020-12-22 06:56:42,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-12-22 06:56:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 467 transitions. [2020-12-22 06:56:42,523 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 467 transitions. Word has length 31 [2020-12-22 06:56:42,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:42,523 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 467 transitions. [2020-12-22 06:56:42,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:42,523 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 467 transitions. [2020-12-22 06:56:42,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 06:56:42,525 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:42,525 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:42,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:56:42,526 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:42,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:42,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1126741246, now seen corresponding path program 1 times [2020-12-22 06:56:42,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:42,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128037248] [2020-12-22 06:56:42,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:56:42,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128037248] [2020-12-22 06:56:42,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:42,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:56:42,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736144098] [2020-12-22 06:56:42,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:42,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:42,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:42,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:42,615 INFO L87 Difference]: Start difference. First operand 336 states and 467 transitions. Second operand 3 states. [2020-12-22 06:56:42,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:42,735 INFO L93 Difference]: Finished difference Result 577 states and 798 transitions. [2020-12-22 06:56:42,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:42,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-12-22 06:56:42,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:42,737 INFO L225 Difference]: With dead ends: 577 [2020-12-22 06:56:42,738 INFO L226 Difference]: Without dead ends: 247 [2020-12-22 06:56:42,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:42,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-12-22 06:56:42,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 239. [2020-12-22 06:56:42,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-12-22 06:56:42,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 325 transitions. [2020-12-22 06:56:42,760 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 325 transitions. Word has length 48 [2020-12-22 06:56:42,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:42,760 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 325 transitions. [2020-12-22 06:56:42,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:42,760 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 325 transitions. [2020-12-22 06:56:42,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:56:42,761 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:42,762 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:42,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:56:42,762 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:42,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:42,763 INFO L82 PathProgramCache]: Analyzing trace with hash 173848119, now seen corresponding path program 1 times [2020-12-22 06:56:42,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:42,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782199239] [2020-12-22 06:56:42,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:42,837 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:56:42,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782199239] [2020-12-22 06:56:42,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:42,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:42,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095787922] [2020-12-22 06:56:42,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:42,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:42,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:42,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:42,842 INFO L87 Difference]: Start difference. First operand 239 states and 325 transitions. Second operand 5 states. [2020-12-22 06:56:42,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:42,983 INFO L93 Difference]: Finished difference Result 733 states and 994 transitions. [2020-12-22 06:56:42,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:42,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-12-22 06:56:42,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:42,987 INFO L225 Difference]: With dead ends: 733 [2020-12-22 06:56:42,987 INFO L226 Difference]: Without dead ends: 500 [2020-12-22 06:56:42,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:56:42,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-12-22 06:56:43,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 248. [2020-12-22 06:56:43,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-12-22 06:56:43,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 334 transitions. [2020-12-22 06:56:43,017 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 334 transitions. Word has length 49 [2020-12-22 06:56:43,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:43,017 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 334 transitions. [2020-12-22 06:56:43,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:43,017 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 334 transitions. [2020-12-22 06:56:43,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:56:43,018 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:43,019 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:43,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:56:43,019 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:43,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:43,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1560051513, now seen corresponding path program 1 times [2020-12-22 06:56:43,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:43,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304684109] [2020-12-22 06:56:43,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:56:43,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304684109] [2020-12-22 06:56:43,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:43,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:43,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664286470] [2020-12-22 06:56:43,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:43,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:43,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:43,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:43,116 INFO L87 Difference]: Start difference. First operand 248 states and 334 transitions. Second operand 5 states. [2020-12-22 06:56:43,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:43,274 INFO L93 Difference]: Finished difference Result 600 states and 800 transitions. [2020-12-22 06:56:43,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:43,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-12-22 06:56:43,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:43,277 INFO L225 Difference]: With dead ends: 600 [2020-12-22 06:56:43,278 INFO L226 Difference]: Without dead ends: 358 [2020-12-22 06:56:43,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:43,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-12-22 06:56:43,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 216. [2020-12-22 06:56:43,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-12-22 06:56:43,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 284 transitions. [2020-12-22 06:56:43,316 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 284 transitions. Word has length 49 [2020-12-22 06:56:43,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:43,317 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 284 transitions. [2020-12-22 06:56:43,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:43,317 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 284 transitions. [2020-12-22 06:56:43,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 06:56:43,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:43,319 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:43,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:56:43,319 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:43,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:43,320 INFO L82 PathProgramCache]: Analyzing trace with hash -103400707, now seen corresponding path program 1 times [2020-12-22 06:56:43,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:43,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365836655] [2020-12-22 06:56:43,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:43,469 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:43,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365836655] [2020-12-22 06:56:43,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827362534] [2020-12-22 06:56:43,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:56:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:43,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 06:56:43,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:56:43,946 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:43,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:56:43,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-12-22 06:56:43,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95710735] [2020-12-22 06:56:43,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:56:43,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:43,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:56:43,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:56:43,954 INFO L87 Difference]: Start difference. First operand 216 states and 284 transitions. Second operand 6 states. [2020-12-22 06:56:44,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:44,255 INFO L93 Difference]: Finished difference Result 608 states and 813 transitions. [2020-12-22 06:56:44,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:56:44,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-12-22 06:56:44,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:44,259 INFO L225 Difference]: With dead ends: 608 [2020-12-22 06:56:44,259 INFO L226 Difference]: Without dead ends: 446 [2020-12-22 06:56:44,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:56:44,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-12-22 06:56:44,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 262. [2020-12-22 06:56:44,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-22 06:56:44,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 345 transitions. [2020-12-22 06:56:44,296 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 345 transitions. Word has length 50 [2020-12-22 06:56:44,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:44,297 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 345 transitions. [2020-12-22 06:56:44,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:56:44,297 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 345 transitions. [2020-12-22 06:56:44,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:56:44,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:44,298 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:44,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 06:56:44,513 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:44,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:44,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1377844072, now seen corresponding path program 2 times [2020-12-22 06:56:44,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:44,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731892281] [2020-12-22 06:56:44,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:56:44,583 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:56:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:56:44,645 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:56:44,731 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:56:44,731 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:56:44,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:56:44,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:56:44 BoogieIcfgContainer [2020-12-22 06:56:44,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:56:44,931 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:56:44,931 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:56:44,931 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:56:44,932 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:39" (3/4) ... [2020-12-22 06:56:44,934 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:56:45,098 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec4_product40.cil.c-witness.graphml [2020-12-22 06:56:45,098 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:56:45,101 INFO L168 Benchmark]: Toolchain (without parser) took 7918.29 ms. Allocated memory was 162.5 MB in the beginning and 205.5 MB in the end (delta: 43.0 MB). Free memory was 137.3 MB in the beginning and 127.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 54.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:45,101 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 162.5 MB. Free memory is still 136.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:56:45,103 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.57 ms. Allocated memory is still 162.5 MB. Free memory was 137.1 MB in the beginning and 115.7 MB in the end (delta: 21.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:45,103 INFO L168 Benchmark]: Boogie Procedure Inliner took 171.62 ms. Allocated memory is still 162.5 MB. Free memory was 115.5 MB in the beginning and 144.2 MB in the end (delta: -28.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:45,103 INFO L168 Benchmark]: Boogie Preprocessor took 103.68 ms. Allocated memory is still 162.5 MB. Free memory was 144.2 MB in the beginning and 141.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:45,104 INFO L168 Benchmark]: RCFGBuilder took 1290.64 ms. Allocated memory is still 162.5 MB. Free memory was 141.6 MB in the beginning and 80.8 MB in the end (delta: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:45,104 INFO L168 Benchmark]: TraceAbstraction took 5477.91 ms. Allocated memory was 162.5 MB in the beginning and 205.5 MB in the end (delta: 43.0 MB). Free memory was 80.8 MB in the beginning and 153.9 MB in the end (delta: -73.1 MB). Peak memory consumption was 58.5 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:45,105 INFO L168 Benchmark]: Witness Printer took 167.60 ms. Allocated memory is still 205.5 MB. Free memory was 153.9 MB in the beginning and 127.7 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:45,107 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 162.5 MB. Free memory is still 136.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 696.57 ms. Allocated memory is still 162.5 MB. Free memory was 137.1 MB in the beginning and 115.7 MB in the end (delta: 21.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 171.62 ms. Allocated memory is still 162.5 MB. Free memory was 115.5 MB in the beginning and 144.2 MB in the end (delta: -28.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 103.68 ms. Allocated memory is still 162.5 MB. Free memory was 144.2 MB in the beginning and 141.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1290.64 ms. Allocated memory is still 162.5 MB. Free memory was 141.6 MB in the beginning and 80.8 MB in the end (delta: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5477.91 ms. Allocated memory was 162.5 MB in the beginning and 205.5 MB in the end (delta: 43.0 MB). Free memory was 80.8 MB in the beginning and 153.9 MB in the end (delta: -73.1 MB). Peak memory consumption was 58.5 MB. Max. memory is 8.0 GB. * Witness Printer took 167.60 ms. Allocated memory is still 205.5 MB. Free memory was 153.9 MB in the beginning and 127.7 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 331]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L125] int pumpRunning = 0; [L126] int systemActive = 1; [L336] int cleanupTimeShifts = 4; [L436] int waterLevel = 1; [L437] int methaneLevelCritical = 0; [L699] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L412] int retValue_acc ; [L413] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L948] int retValue_acc ; [L951] retValue_acc = 1 [L952] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L419] tmp = valid_product() [L421] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L49] int splverifierCounter ; [L50] int tmp ; [L51] int tmp___0 ; [L52] int tmp___1 ; [L53] int tmp___2 ; [L56] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L66] tmp = __VERIFIER_nondet_int() [L68] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L454] COND TRUE waterLevel < 2 [L455] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L322] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L133] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L140] COND TRUE \read(systemActive) [L188] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L191] COND FALSE !(\read(pumpRunning)) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L165] COND TRUE ! pumpRunning [L285] int retValue_acc ; [L286] int tmp ; [L287] int tmp___0 ; [L516] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L519] COND FALSE !(waterLevel < 2) [L523] retValue_acc = 0 [L524] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L291] tmp = isHighWaterSensorDry() [L293] COND FALSE !(\read(tmp)) [L296] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L298] retValue_acc = tmp___0 [L299] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L167] tmp = isHighWaterLevel() [L169] COND TRUE \read(tmp) [L216] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L897] int tmp ; [L898] int tmp___0 ; [L507] int retValue_acc ; [L510] retValue_acc = waterLevel [L511] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L902] tmp = getWaterLevel() [L904] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L66] tmp = __VERIFIER_nondet_int() [L68] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L322] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L133] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L442] COND TRUE waterLevel > 0 [L443] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L140] COND TRUE \read(systemActive) [L188] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L191] COND TRUE \read(pumpRunning) [L229] int retValue_acc ; [L475] int retValue_acc ; [L478] retValue_acc = methaneLevelCritical [L479] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L233] retValue_acc = isMethaneLevelCritical() [L235] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L193] tmp = isMethaneAlarm() [L195] COND FALSE !(\read(tmp)) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L165] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L897] int tmp ; [L898] int tmp___0 ; [L507] int retValue_acc ; [L510] retValue_acc = waterLevel [L511] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L902] tmp = getWaterLevel() [L904] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L66] tmp = __VERIFIER_nondet_int() [L68] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L322] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L133] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L442] COND TRUE waterLevel > 0 [L443] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L140] COND TRUE \read(systemActive) [L188] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L191] COND TRUE \read(pumpRunning) [L229] int retValue_acc ; [L475] int retValue_acc ; [L478] retValue_acc = methaneLevelCritical [L479] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L233] retValue_acc = isMethaneLevelCritical() [L235] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L193] tmp = isMethaneAlarm() [L195] COND FALSE !(\read(tmp)) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L165] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L897] int tmp ; [L898] int tmp___0 ; [L507] int retValue_acc ; [L510] retValue_acc = waterLevel [L511] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L902] tmp = getWaterLevel() [L904] COND TRUE tmp == 0 [L240] int retValue_acc ; [L243] retValue_acc = pumpRunning [L244] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L906] tmp___0 = isPumpRunning() [L908] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L331] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 113 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.2s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1409 SDtfs, 1510 SDslu, 1947 SDs, 0 SdLazy, 301 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=336occurred 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: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 1432 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 538 NumberOfCodeBlocks, 538 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 455 ConstructedInterpolants, 0 QuantifiedInterpolants, 28097 SizeOfPredicates, 3 NumberOfNonLiveVariables, 420 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 64/70 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...