/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_spec3_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:55:50,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:55:50,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:55:50,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:55:50,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:55:50,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:55:50,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:55:50,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:55:50,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:55:50,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:55:50,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:55:50,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:55:50,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:55:50,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:55:50,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:55:50,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:55:50,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:55:50,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:55:50,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:55:50,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:55:50,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:55:50,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:55:50,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:55:50,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:55:50,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:55:50,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:55:50,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:55:50,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:55:50,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:55:50,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:55:50,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:55:50,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:55:50,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:55:50,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:55:50,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:55:50,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:55:50,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:55:50,318 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:55:50,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:55:50,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:55:50,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:55:50,321 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:55:50,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:55:50,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:55:50,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:55:50,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:55:50,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:55:50,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:55:50,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:55:50,323 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:55:50,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:55:50,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:55:50,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:55:50,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:55:50,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:55:50,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:55:50,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:55:50,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:55:50,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:55:50,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:55:50,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:55:50,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:55:50,326 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:55:50,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:55:50,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:55:50,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:55:50,754 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:55:50,755 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:55:50,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c [2020-12-22 06:55:50,850 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/088776659/5b71094926724dad82b5dac30ea52771/FLAG994c00352 [2020-12-22 06:55:51,572 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:55:51,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c [2020-12-22 06:55:51,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/088776659/5b71094926724dad82b5dac30ea52771/FLAG994c00352 [2020-12-22 06:55:51,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/088776659/5b71094926724dad82b5dac30ea52771 [2020-12-22 06:55:51,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:55:51,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:55:51,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:55:51,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:55:51,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:55:51,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:55:51" (1/1) ... [2020-12-22 06:55:51,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b397d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:51, skipping insertion in model container [2020-12-22 06:55:51,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:55:51" (1/1) ... [2020-12-22 06:55:51,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:55:51,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:55:52,321 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_spec3_product56.cil.c[18951,18964] [2020-12-22 06:55:52,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:55:52,341 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:55:52,430 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_spec3_product56.cil.c[18951,18964] [2020-12-22 06:55:52,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:55:52,494 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:55:52,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:52 WrapperNode [2020-12-22 06:55:52,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:55:52,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:55:52,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:55:52,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:55:52,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:52" (1/1) ... [2020-12-22 06:55:52,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:52" (1/1) ... [2020-12-22 06:55:52,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:55:52,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:55:52,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:55:52,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:55:52,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:52" (1/1) ... [2020-12-22 06:55:52,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:52" (1/1) ... [2020-12-22 06:55:52,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:52" (1/1) ... [2020-12-22 06:55:52,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:52" (1/1) ... [2020-12-22 06:55:52,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:52" (1/1) ... [2020-12-22 06:55:52,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:52" (1/1) ... [2020-12-22 06:55:52,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:52" (1/1) ... [2020-12-22 06:55:52,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:55:52,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:55:52,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:55:52,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:55:52,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:52" (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 06:55:52,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:55:52,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:55:52,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:55:52,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:55:54,060 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:55:54,060 INFO L299 CfgBuilder]: Removed 288 assume(true) statements. [2020-12-22 06:55:54,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:55:54 BoogieIcfgContainer [2020-12-22 06:55:54,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:55:54,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:55:54,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:55:54,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:55:54,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:55:51" (1/3) ... [2020-12-22 06:55:54,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35abb51c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:55:54, skipping insertion in model container [2020-12-22 06:55:54,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:52" (2/3) ... [2020-12-22 06:55:54,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35abb51c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:55:54, skipping insertion in model container [2020-12-22 06:55:54,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:55:54" (3/3) ... [2020-12-22 06:55:54,071 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product56.cil.c [2020-12-22 06:55:54,078 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:55:54,084 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:55:54,106 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:55:54,137 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:55:54,138 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:55:54,138 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:55:54,138 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:55:54,138 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:55:54,138 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:55:54,138 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:55:54,139 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:55:54,161 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-12-22 06:55:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 06:55:54,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:54,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:55:54,170 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:54,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:54,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1618500051, now seen corresponding path program 1 times [2020-12-22 06:55:54,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:54,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138903192] [2020-12-22 06:55:54,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:54,558 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 06:55:54,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138903192] [2020-12-22 06:55:54,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:54,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:55:54,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510486491] [2020-12-22 06:55:54,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:55:54,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:54,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:55:54,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:55:54,586 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 2 states. [2020-12-22 06:55:54,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:54,637 INFO L93 Difference]: Finished difference Result 388 states and 593 transitions. [2020-12-22 06:55:54,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:55:54,639 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-12-22 06:55:54,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:54,654 INFO L225 Difference]: With dead ends: 388 [2020-12-22 06:55:54,654 INFO L226 Difference]: Without dead ends: 193 [2020-12-22 06:55:54,659 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 06:55:54,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-12-22 06:55:54,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2020-12-22 06:55:54,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-12-22 06:55:54,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 288 transitions. [2020-12-22 06:55:54,741 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 288 transitions. Word has length 18 [2020-12-22 06:55:54,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:54,742 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 288 transitions. [2020-12-22 06:55:54,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:55:54,742 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 288 transitions. [2020-12-22 06:55:54,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 06:55:54,744 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:54,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:55:54,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:55:54,745 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:54,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:54,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1765436492, now seen corresponding path program 1 times [2020-12-22 06:55:54,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:54,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996915231] [2020-12-22 06:55:54,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:54,862 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 06:55:54,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996915231] [2020-12-22 06:55:54,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:54,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:55:54,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205795126] [2020-12-22 06:55:54,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:55:54,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:54,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:55:54,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:55:54,868 INFO L87 Difference]: Start difference. First operand 193 states and 288 transitions. Second operand 3 states. [2020-12-22 06:55:54,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:54,911 INFO L93 Difference]: Finished difference Result 193 states and 288 transitions. [2020-12-22 06:55:54,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:55:54,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 06:55:54,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:54,913 INFO L225 Difference]: With dead ends: 193 [2020-12-22 06:55:54,916 INFO L226 Difference]: Without dead ends: 75 [2020-12-22 06:55:54,918 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 06:55:54,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-22 06:55:54,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-12-22 06:55:54,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-22 06:55:54,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 111 transitions. [2020-12-22 06:55:54,930 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 111 transitions. Word has length 19 [2020-12-22 06:55:54,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:54,931 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 111 transitions. [2020-12-22 06:55:54,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:55:54,931 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 111 transitions. [2020-12-22 06:55:54,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 06:55:54,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:54,933 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 06:55:54,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:55:54,933 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:54,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:54,934 INFO L82 PathProgramCache]: Analyzing trace with hash 134472408, now seen corresponding path program 1 times [2020-12-22 06:55:54,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:54,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148144770] [2020-12-22 06:55:54,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:55,036 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 06:55:55,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148144770] [2020-12-22 06:55:55,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:55,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:55:55,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131652766] [2020-12-22 06:55:55,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:55:55,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:55,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:55:55,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:55:55,043 INFO L87 Difference]: Start difference. First operand 75 states and 111 transitions. Second operand 3 states. [2020-12-22 06:55:55,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:55,103 INFO L93 Difference]: Finished difference Result 213 states and 321 transitions. [2020-12-22 06:55:55,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:55:55,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 06:55:55,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:55,108 INFO L225 Difference]: With dead ends: 213 [2020-12-22 06:55:55,109 INFO L226 Difference]: Without dead ends: 144 [2020-12-22 06:55:55,111 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 06:55:55,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-22 06:55:55,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 140. [2020-12-22 06:55:55,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-22 06:55:55,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 211 transitions. [2020-12-22 06:55:55,140 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 211 transitions. Word has length 24 [2020-12-22 06:55:55,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:55,140 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 211 transitions. [2020-12-22 06:55:55,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:55:55,142 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 211 transitions. [2020-12-22 06:55:55,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 06:55:55,144 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:55,144 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] [2020-12-22 06:55:55,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:55:55,145 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:55,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:55,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1119046690, now seen corresponding path program 1 times [2020-12-22 06:55:55,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:55,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2399626] [2020-12-22 06:55:55,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:55,275 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 06:55:55,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2399626] [2020-12-22 06:55:55,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:55,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:55:55,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876773762] [2020-12-22 06:55:55,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:55:55,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:55,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:55:55,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:55:55,279 INFO L87 Difference]: Start difference. First operand 140 states and 211 transitions. Second operand 3 states. [2020-12-22 06:55:55,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:55,334 INFO L93 Difference]: Finished difference Result 295 states and 448 transitions. [2020-12-22 06:55:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:55:55,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 06:55:55,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:55,336 INFO L225 Difference]: With dead ends: 295 [2020-12-22 06:55:55,337 INFO L226 Difference]: Without dead ends: 161 [2020-12-22 06:55:55,338 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 06:55:55,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-12-22 06:55:55,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2020-12-22 06:55:55,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-12-22 06:55:55,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 231 transitions. [2020-12-22 06:55:55,354 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 231 transitions. Word has length 27 [2020-12-22 06:55:55,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:55,355 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 231 transitions. [2020-12-22 06:55:55,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:55:55,355 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 231 transitions. [2020-12-22 06:55:55,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 06:55:55,356 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:55,357 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] [2020-12-22 06:55:55,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:55:55,357 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:55,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:55,358 INFO L82 PathProgramCache]: Analyzing trace with hash -428868179, now seen corresponding path program 1 times [2020-12-22 06:55:55,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:55,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248321054] [2020-12-22 06:55:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:55,440 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 06:55:55,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248321054] [2020-12-22 06:55:55,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:55,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:55:55,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908227994] [2020-12-22 06:55:55,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:55:55,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:55,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:55:55,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:55:55,443 INFO L87 Difference]: Start difference. First operand 159 states and 231 transitions. Second operand 5 states. [2020-12-22 06:55:55,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:55,615 INFO L93 Difference]: Finished difference Result 809 states and 1191 transitions. [2020-12-22 06:55:55,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:55:55,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-12-22 06:55:55,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:55,621 INFO L225 Difference]: With dead ends: 809 [2020-12-22 06:55:55,621 INFO L226 Difference]: Without dead ends: 656 [2020-12-22 06:55:55,622 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 06:55:55,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2020-12-22 06:55:55,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 252. [2020-12-22 06:55:55,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-12-22 06:55:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 356 transitions. [2020-12-22 06:55:55,668 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 356 transitions. Word has length 27 [2020-12-22 06:55:55,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:55,668 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 356 transitions. [2020-12-22 06:55:55,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:55:55,669 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 356 transitions. [2020-12-22 06:55:55,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 06:55:55,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:55,674 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] [2020-12-22 06:55:55,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:55:55,675 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:55,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:55,675 INFO L82 PathProgramCache]: Analyzing trace with hash -2129131921, now seen corresponding path program 1 times [2020-12-22 06:55:55,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:55,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546286290] [2020-12-22 06:55:55,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:55:55,803 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:55:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:55:55,870 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:55:55,936 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:55:55,937 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:55:55,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:55:56,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:55:56 BoogieIcfgContainer [2020-12-22 06:55:56,100 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:55:56,103 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:55:56,103 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:55:56,104 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:55:56,104 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:55:54" (3/4) ... [2020-12-22 06:55:56,110 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:55:56,247 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec3_product56.cil.c-witness.graphml [2020-12-22 06:55:56,248 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:55:56,250 INFO L168 Benchmark]: Toolchain (without parser) took 4407.43 ms. Allocated memory was 176.2 MB in the beginning and 221.2 MB in the end (delta: 45.1 MB). Free memory was 149.3 MB in the beginning and 74.2 MB in the end (delta: 75.1 MB). Peak memory consumption was 121.7 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:56,250 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 176.2 MB. Free memory is still 157.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:55:56,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.25 ms. Allocated memory is still 176.2 MB. Free memory was 149.1 MB in the beginning and 153.0 MB in the end (delta: -4.0 MB). Peak memory consumption was 23.7 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:56,251 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.14 ms. Allocated memory is still 176.2 MB. Free memory was 153.0 MB in the beginning and 147.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:56,252 INFO L168 Benchmark]: Boogie Preprocessor took 73.80 ms. Allocated memory is still 176.2 MB. Free memory was 147.9 MB in the beginning and 144.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:56,254 INFO L168 Benchmark]: RCFGBuilder took 1389.11 ms. Allocated memory is still 176.2 MB. Free memory was 144.4 MB in the beginning and 99.3 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:56,255 INFO L168 Benchmark]: TraceAbstraction took 2036.28 ms. Allocated memory was 176.2 MB in the beginning and 221.2 MB in the end (delta: 45.1 MB). Free memory was 98.8 MB in the beginning and 85.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 58.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:56,255 INFO L168 Benchmark]: Witness Printer took 144.68 ms. Allocated memory is still 221.2 MB. Free memory was 85.8 MB in the beginning and 74.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:56,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 176.2 MB. Free memory is still 157.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 645.25 ms. Allocated memory is still 176.2 MB. Free memory was 149.1 MB in the beginning and 153.0 MB in the end (delta: -4.0 MB). Peak memory consumption was 23.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 102.14 ms. Allocated memory is still 176.2 MB. Free memory was 153.0 MB in the beginning and 147.9 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 73.80 ms. Allocated memory is still 176.2 MB. Free memory was 147.9 MB in the beginning and 144.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1389.11 ms. Allocated memory is still 176.2 MB. Free memory was 144.4 MB in the beginning and 99.3 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2036.28 ms. Allocated memory was 176.2 MB in the beginning and 221.2 MB in the end (delta: 45.1 MB). Free memory was 98.8 MB in the beginning and 85.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 58.1 MB. Max. memory is 8.0 GB. * Witness Printer took 144.68 ms. Allocated memory is still 221.2 MB. Free memory was 85.8 MB in the beginning and 74.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1015]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L315] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L589] int waterLevel = 1; [L590] int methaneLevelCritical = 0; [L696] int pumpRunning = 0; [L697] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L123] int retValue_acc ; [L124] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L538] int retValue_acc ; [L541] retValue_acc = 1 [L542] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L943] int splverifierCounter ; [L944] int tmp ; [L945] int tmp___0 ; [L946] int tmp___1 ; [L947] int tmp___2 ; [L950] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L952] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L954] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L960] tmp = __VERIFIER_nondet_int() [L962] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L607] COND TRUE waterLevel < 2 [L608] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L970] tmp___0 = __VERIFIER_nondet_int() [L972] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L980] tmp___2 = __VERIFIER_nondet_int() [L982] COND FALSE !(\read(tmp___2)) [L988] tmp___1 = __VERIFIER_nondet_int() [L990] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L922] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L929] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L703] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L710] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L552] int tmp ; [L553] int tmp___0 ; [L554] int tmp___1 ; [L628] int retValue_acc ; [L631] retValue_acc = methaneLevelCritical [L632] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L558] tmp = isMethaneLevelCritical() [L560] COND FALSE !(\read(tmp)) [L660] int retValue_acc ; [L663] retValue_acc = waterLevel [L664] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L564] tmp___0 = getWaterLevel() [L566] COND TRUE tmp___0 == 2 [L836] int retValue_acc ; [L839] retValue_acc = pumpRunning [L840] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L568] tmp___1 = isPumpRunning() [L570] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L1015] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 197 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 753 SDtfs, 598 SDslu, 522 SDs, 0 SdLazy, 73 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=252occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 410 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 4790 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...