/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:53:38,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:53:38,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:53:38,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:53:38,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:53:38,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:53:38,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:53:38,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:53:38,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:53:38,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:53:38,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:53:38,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:53:38,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:53:38,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:53:38,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:53:38,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:53:38,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:53:38,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:53:38,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:53:38,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:53:38,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:53:38,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:53:38,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:53:38,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:53:38,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:53:38,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:53:38,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:53:38,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:53:38,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:53:38,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:53:38,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:53:38,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:53:38,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:53:38,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:53:38,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:53:38,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:53:38,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:53:38,734 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:53:38,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:53:38,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:53:38,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:53:38,739 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:53:38,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:53:38,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:53:38,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:53:38,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:53:38,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:53:38,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:53:38,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:53:38,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:53:38,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:53:38,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:53:38,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:53:38,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:53:38,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:53:38,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:53:38,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:53:38,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:53:38,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:53:38,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:53:38,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:53:38,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:53:38,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:53:39,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:53:39,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:53:39,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:53:39,261 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:53:39,262 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:53:39,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c [2020-12-22 06:53:39,350 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32be2419b/4d23726413c649c185fc16e1901a1fd0/FLAG00df61f76 [2020-12-22 06:53:39,971 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:53:39,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c [2020-12-22 06:53:39,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32be2419b/4d23726413c649c185fc16e1901a1fd0/FLAG00df61f76 [2020-12-22 06:53:40,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32be2419b/4d23726413c649c185fc16e1901a1fd0 [2020-12-22 06:53:40,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:53:40,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:53:40,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:53:40,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:53:40,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:53:40,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:53:40" (1/1) ... [2020-12-22 06:53:40,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8166c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:40, skipping insertion in model container [2020-12-22 06:53:40,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:53:40" (1/1) ... [2020-12-22 06:53:40,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:53:40,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:53:40,565 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c[5838,5851] [2020-12-22 06:53:40,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:53:40,754 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:53:40,839 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c[5838,5851] [2020-12-22 06:53:40,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:53:40,995 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:53:40,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:40 WrapperNode [2020-12-22 06:53:40,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:53:40,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:53:40,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:53:40,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:53:41,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:40" (1/1) ... [2020-12-22 06:53:41,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:40" (1/1) ... [2020-12-22 06:53:41,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:53:41,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:53:41,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:53:41,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:53:41,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:40" (1/1) ... [2020-12-22 06:53:41,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:40" (1/1) ... [2020-12-22 06:53:41,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:40" (1/1) ... [2020-12-22 06:53:41,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:40" (1/1) ... [2020-12-22 06:53:41,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:40" (1/1) ... [2020-12-22 06:53:41,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:40" (1/1) ... [2020-12-22 06:53:41,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:40" (1/1) ... [2020-12-22 06:53:41,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:53:41,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:53:41,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:53:41,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:53:41,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:53:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:53:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:53:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:53:41,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:53:42,342 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:53:42,342 INFO L299 CfgBuilder]: Removed 162 assume(true) statements. [2020-12-22 06:53:42,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:42 BoogieIcfgContainer [2020-12-22 06:53:42,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:53:42,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:53:42,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:53:42,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:53:42,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:53:40" (1/3) ... [2020-12-22 06:53:42,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c22afa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:53:42, skipping insertion in model container [2020-12-22 06:53:42,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:40" (2/3) ... [2020-12-22 06:53:42,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c22afa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:53:42, skipping insertion in model container [2020-12-22 06:53:42,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:42" (3/3) ... [2020-12-22 06:53:42,363 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2020-12-22 06:53:42,370 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:53:42,377 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:53:42,398 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:53:42,436 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:53:42,436 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:53:42,436 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:53:42,436 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:53:42,436 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:53:42,437 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:53:42,437 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:53:42,437 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:53:42,457 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2020-12-22 06:53:42,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 06:53:42,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:42,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:42,466 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:42,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:42,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1794729554, now seen corresponding path program 1 times [2020-12-22 06:53:42,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:42,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036315091] [2020-12-22 06:53:42,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:42,799 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 06:53:42,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036315091] [2020-12-22 06:53:42,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:42,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:42,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672770516] [2020-12-22 06:53:42,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:53:42,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:42,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:53:42,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:53:42,826 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 2 states. [2020-12-22 06:53:42,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:42,863 INFO L93 Difference]: Finished difference Result 232 states and 353 transitions. [2020-12-22 06:53:42,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:53:42,865 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-22 06:53:42,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:42,879 INFO L225 Difference]: With dead ends: 232 [2020-12-22 06:53:42,879 INFO L226 Difference]: Without dead ends: 115 [2020-12-22 06:53:42,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:53:42,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-22 06:53:42,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-12-22 06:53:42,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-22 06:53:42,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2020-12-22 06:53:42,938 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 16 [2020-12-22 06:53:42,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:42,938 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2020-12-22 06:53:42,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:53:42,939 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2020-12-22 06:53:42,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 06:53:42,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:42,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:42,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:53:42,941 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:42,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:42,942 INFO L82 PathProgramCache]: Analyzing trace with hash 529368141, now seen corresponding path program 1 times [2020-12-22 06:53:42,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:42,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358549210] [2020-12-22 06:53:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:43,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:53:43,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358549210] [2020-12-22 06:53:43,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:43,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:53:43,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011173530] [2020-12-22 06:53:43,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:43,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:43,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:43,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:43,093 INFO L87 Difference]: Start difference. First operand 115 states and 168 transitions. Second operand 3 states. [2020-12-22 06:53:43,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:43,108 INFO L93 Difference]: Finished difference Result 115 states and 168 transitions. [2020-12-22 06:53:43,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:43,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 06:53:43,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:43,110 INFO L225 Difference]: With dead ends: 115 [2020-12-22 06:53:43,110 INFO L226 Difference]: Without dead ends: 49 [2020-12-22 06:53:43,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:43,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-22 06:53:43,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-12-22 06:53:43,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 06:53:43,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2020-12-22 06:53:43,119 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 17 [2020-12-22 06:53:43,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:43,119 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2020-12-22 06:53:43,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:43,120 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2020-12-22 06:53:43,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 06:53:43,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:43,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:43,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:53:43,121 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:43,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:43,122 INFO L82 PathProgramCache]: Analyzing trace with hash -2061312917, now seen corresponding path program 1 times [2020-12-22 06:53:43,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:43,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162074930] [2020-12-22 06:53:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:53:43,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162074930] [2020-12-22 06:53:43,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:43,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:53:43,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152539559] [2020-12-22 06:53:43,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:43,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:43,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:43,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:43,257 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand 5 states. [2020-12-22 06:53:43,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:43,380 INFO L93 Difference]: Finished difference Result 115 states and 170 transitions. [2020-12-22 06:53:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:53:43,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-12-22 06:53:43,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:43,385 INFO L225 Difference]: With dead ends: 115 [2020-12-22 06:53:43,386 INFO L226 Difference]: Without dead ends: 72 [2020-12-22 06:53:43,389 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 06:53:43,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-22 06:53:43,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2020-12-22 06:53:43,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-22 06:53:43,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions. [2020-12-22 06:53:43,414 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 22 [2020-12-22 06:53:43,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:43,414 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 100 transitions. [2020-12-22 06:53:43,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:43,415 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2020-12-22 06:53:43,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 06:53:43,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:43,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:43,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:53:43,420 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:43,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:43,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1499976397, now seen corresponding path program 1 times [2020-12-22 06:53:43,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:43,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752156845] [2020-12-22 06:53:43,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:43,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:53:43,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752156845] [2020-12-22 06:53:43,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:43,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:43,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442770283] [2020-12-22 06:53:43,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:43,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:43,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:43,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:43,540 INFO L87 Difference]: Start difference. First operand 68 states and 100 transitions. Second operand 3 states. [2020-12-22 06:53:43,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:43,580 INFO L93 Difference]: Finished difference Result 151 states and 224 transitions. [2020-12-22 06:53:43,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:43,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 06:53:43,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:43,582 INFO L225 Difference]: With dead ends: 151 [2020-12-22 06:53:43,582 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 06:53:43,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:43,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 06:53:43,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2020-12-22 06:53:43,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-22 06:53:43,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2020-12-22 06:53:43,595 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 24 [2020-12-22 06:53:43,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:43,596 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2020-12-22 06:53:43,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:43,596 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2020-12-22 06:53:43,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 06:53:43,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:43,598 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 06:53:43,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:53:43,598 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:43,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:43,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1678878848, now seen corresponding path program 1 times [2020-12-22 06:53:43,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:43,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014765629] [2020-12-22 06:53:43,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:53:43,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014765629] [2020-12-22 06:53:43,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:43,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:53:43,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379772766] [2020-12-22 06:53:43,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:43,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:43,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:43,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:43,709 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand 5 states. [2020-12-22 06:53:43,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:43,818 INFO L93 Difference]: Finished difference Result 445 states and 650 transitions. [2020-12-22 06:53:43,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:53:43,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-12-22 06:53:43,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:43,827 INFO L225 Difference]: With dead ends: 445 [2020-12-22 06:53:43,828 INFO L226 Difference]: Without dead ends: 364 [2020-12-22 06:53:43,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:53:43,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-12-22 06:53:43,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 160. [2020-12-22 06:53:43,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-12-22 06:53:43,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 226 transitions. [2020-12-22 06:53:43,886 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 226 transitions. Word has length 25 [2020-12-22 06:53:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:43,887 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 226 transitions. [2020-12-22 06:53:43,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:43,887 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 226 transitions. [2020-12-22 06:53:43,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 06:53:43,888 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:43,888 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 06:53:43,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:53:43,889 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:43,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:43,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1475071754, now seen corresponding path program 1 times [2020-12-22 06:53:43,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:43,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043942316] [2020-12-22 06:53:43,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:53:43,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043942316] [2020-12-22 06:53:43,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:43,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:53:43,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263175562] [2020-12-22 06:53:43,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:43,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:43,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:43,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:43,993 INFO L87 Difference]: Start difference. First operand 160 states and 226 transitions. Second operand 5 states. [2020-12-22 06:53:44,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:44,128 INFO L93 Difference]: Finished difference Result 448 states and 637 transitions. [2020-12-22 06:53:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:53:44,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-22 06:53:44,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:44,131 INFO L225 Difference]: With dead ends: 448 [2020-12-22 06:53:44,131 INFO L226 Difference]: Without dead ends: 446 [2020-12-22 06:53:44,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:53:44,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-12-22 06:53:44,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 160. [2020-12-22 06:53:44,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-12-22 06:53:44,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 224 transitions. [2020-12-22 06:53:44,150 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 224 transitions. Word has length 26 [2020-12-22 06:53:44,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:44,150 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 224 transitions. [2020-12-22 06:53:44,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:44,150 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 224 transitions. [2020-12-22 06:53:44,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:44,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:44,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:44,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:53:44,153 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:44,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:44,153 INFO L82 PathProgramCache]: Analyzing trace with hash 317568404, now seen corresponding path program 1 times [2020-12-22 06:53:44,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:44,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890605945] [2020-12-22 06:53:44,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:44,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:53:44,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890605945] [2020-12-22 06:53:44,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:44,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:53:44,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556675593] [2020-12-22 06:53:44,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:44,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:44,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:44,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:44,208 INFO L87 Difference]: Start difference. First operand 160 states and 224 transitions. Second operand 5 states. [2020-12-22 06:53:44,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:44,310 INFO L93 Difference]: Finished difference Result 476 states and 660 transitions. [2020-12-22 06:53:44,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:53:44,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-22 06:53:44,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:44,313 INFO L225 Difference]: With dead ends: 476 [2020-12-22 06:53:44,313 INFO L226 Difference]: Without dead ends: 322 [2020-12-22 06:53:44,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:53:44,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-12-22 06:53:44,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 172. [2020-12-22 06:53:44,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-12-22 06:53:44,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 236 transitions. [2020-12-22 06:53:44,346 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 236 transitions. Word has length 31 [2020-12-22 06:53:44,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:44,348 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 236 transitions. [2020-12-22 06:53:44,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:44,348 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 236 transitions. [2020-12-22 06:53:44,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:44,356 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:44,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:44,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:53:44,357 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:44,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:44,357 INFO L82 PathProgramCache]: Analyzing trace with hash -75458606, now seen corresponding path program 1 times [2020-12-22 06:53:44,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:44,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829082836] [2020-12-22 06:53:44,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:53:44,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829082836] [2020-12-22 06:53:44,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:44,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:53:44,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114935933] [2020-12-22 06:53:44,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:53:44,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:44,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:53:44,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:53:44,444 INFO L87 Difference]: Start difference. First operand 172 states and 236 transitions. Second operand 6 states. [2020-12-22 06:53:44,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:44,538 INFO L93 Difference]: Finished difference Result 510 states and 694 transitions. [2020-12-22 06:53:44,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:53:44,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-12-22 06:53:44,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:44,541 INFO L225 Difference]: With dead ends: 510 [2020-12-22 06:53:44,541 INFO L226 Difference]: Without dead ends: 344 [2020-12-22 06:53:44,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 06:53:44,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-12-22 06:53:44,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 180. [2020-12-22 06:53:44,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-12-22 06:53:44,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 244 transitions. [2020-12-22 06:53:44,562 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 244 transitions. Word has length 31 [2020-12-22 06:53:44,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:44,562 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 244 transitions. [2020-12-22 06:53:44,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:53:44,562 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 244 transitions. [2020-12-22 06:53:44,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:44,564 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:44,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:44,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:53:44,564 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:44,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:44,565 INFO L82 PathProgramCache]: Analyzing trace with hash 182706832, now seen corresponding path program 1 times [2020-12-22 06:53:44,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:44,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097493609] [2020-12-22 06:53:44,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:44,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:53:44,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097493609] [2020-12-22 06:53:44,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:44,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:44,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301788519] [2020-12-22 06:53:44,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:44,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:44,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:44,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:44,625 INFO L87 Difference]: Start difference. First operand 180 states and 244 transitions. Second operand 3 states. [2020-12-22 06:53:44,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:44,665 INFO L93 Difference]: Finished difference Result 442 states and 598 transitions. [2020-12-22 06:53:44,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:44,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-12-22 06:53:44,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:44,667 INFO L225 Difference]: With dead ends: 442 [2020-12-22 06:53:44,667 INFO L226 Difference]: Without dead ends: 268 [2020-12-22 06:53:44,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:44,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-12-22 06:53:44,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2020-12-22 06:53:44,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-12-22 06:53:44,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 354 transitions. [2020-12-22 06:53:44,694 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 354 transitions. Word has length 31 [2020-12-22 06:53:44,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:44,695 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 354 transitions. [2020-12-22 06:53:44,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:44,695 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 354 transitions. [2020-12-22 06:53:44,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 06:53:44,696 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:44,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:44,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:53:44,697 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:44,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:44,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1930053038, now seen corresponding path program 1 times [2020-12-22 06:53:44,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:44,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002874945] [2020-12-22 06:53:44,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:53:44,766 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:53:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:53:44,832 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:53:44,883 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:53:44,884 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:53:44,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:53:45,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:53:45 BoogieIcfgContainer [2020-12-22 06:53:45,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:53:45,018 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:53:45,019 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:53:45,019 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:53:45,021 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:42" (3/4) ... [2020-12-22 06:53:45,025 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:53:45,119 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec1_product52.cil.c-witness.graphml [2020-12-22 06:53:45,119 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:53:45,121 INFO L168 Benchmark]: Toolchain (without parser) took 4846.98 ms. Allocated memory was 152.0 MB in the beginning and 184.5 MB in the end (delta: 32.5 MB). Free memory was 126.5 MB in the beginning and 138.3 MB in the end (delta: -11.8 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:45,122 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:53:45,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 714.93 ms. Allocated memory is still 152.0 MB. Free memory was 126.3 MB in the beginning and 132.7 MB in the end (delta: -6.5 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:45,123 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.73 ms. Allocated memory is still 152.0 MB. Free memory was 132.7 MB in the beginning and 129.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:45,124 INFO L168 Benchmark]: Boogie Preprocessor took 69.93 ms. Allocated memory is still 152.0 MB. Free memory was 129.0 MB in the beginning and 126.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:45,124 INFO L168 Benchmark]: RCFGBuilder took 1191.20 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 104.9 MB in the end (delta: 21.3 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:45,125 INFO L168 Benchmark]: TraceAbstraction took 2667.43 ms. Allocated memory was 152.0 MB in the beginning and 184.5 MB in the end (delta: 32.5 MB). Free memory was 104.4 MB in the beginning and 152.0 MB in the end (delta: -47.6 MB). Peak memory consumption was 78.8 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:45,126 INFO L168 Benchmark]: Witness Printer took 100.71 ms. Allocated memory is still 184.5 MB. Free memory was 152.0 MB in the beginning and 138.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:45,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 714.93 ms. Allocated memory is still 152.0 MB. Free memory was 126.3 MB in the beginning and 132.7 MB in the end (delta: -6.5 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 87.73 ms. Allocated memory is still 152.0 MB. Free memory was 132.7 MB in the beginning and 129.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 69.93 ms. Allocated memory is still 152.0 MB. Free memory was 129.0 MB in the beginning and 126.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1191.20 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 104.9 MB in the end (delta: 21.3 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2667.43 ms. Allocated memory was 152.0 MB in the beginning and 184.5 MB in the end (delta: 32.5 MB). Free memory was 104.4 MB in the beginning and 152.0 MB in the end (delta: -47.6 MB). Peak memory consumption was 78.8 MB. Max. memory is 8.0 GB. * Witness Printer took 100.71 ms. Allocated memory is still 184.5 MB. Free memory was 152.0 MB in the beginning and 138.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 385]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int waterLevel = 1; [L51] int methaneLevelCritical = 0; [L160] int pumpRunning = 0; [L161] int systemActive = 1; [L460] int cleanupTimeShifts = 4; [L754] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L536] int retValue_acc ; [L537] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L977] int retValue_acc ; [L980] retValue_acc = 1 [L981] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L543] tmp = valid_product() [L545] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L392] int splverifierCounter ; [L393] int tmp ; [L394] int tmp___0 ; [L395] int tmp___1 ; [L396] int tmp___2 ; [L399] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L401] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L403] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L409] tmp = __VERIFIER_nondet_int() [L411] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L68] COND TRUE waterLevel < 2 [L69] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L419] tmp___0 = __VERIFIER_nondet_int() [L421] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L80] COND FALSE !(\read(methaneLevelCritical)) [L83] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L429] tmp___2 = __VERIFIER_nondet_int() [L431] COND TRUE \read(tmp___2) [L376] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L168] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L175] COND TRUE \read(systemActive) [L223] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L226] COND FALSE !(\read(pumpRunning)) [L197] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L200] COND TRUE ! pumpRunning [L320] int retValue_acc ; [L321] int tmp ; [L322] int tmp___0 ; [L130] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L133] COND FALSE !(waterLevel < 2) [L137] retValue_acc = 0 [L138] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L326] tmp = isHighWaterSensorDry() [L328] COND FALSE !(\read(tmp)) [L331] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L333] retValue_acc = tmp___0 [L334] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L202] tmp = isHighWaterLevel() [L204] COND TRUE \read(tmp) [L251] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L560] int tmp ; [L561] int tmp___0 ; [L89] int retValue_acc ; [L92] retValue_acc = methaneLevelCritical [L93] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L565] tmp = isMethaneLevelCritical() [L567] COND TRUE \read(tmp) [L275] int retValue_acc ; [L278] retValue_acc = pumpRunning [L279] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L569] tmp___0 = isPumpRunning() [L571] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L385] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 119 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 873 SDtfs, 1371 SDslu, 1164 SDs, 0 SdLazy, 154 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=268occurred 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: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 810 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 10236 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...