/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_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:55:36,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:55:36,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:55:37,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:55:37,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:55:37,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:55:37,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:55:37,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:55:37,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:55:37,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:55:37,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:55:37,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:55:37,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:55:37,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:55:37,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:55:37,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:55:37,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:55:37,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:55:37,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:55:37,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:55:37,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:55:37,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:55:37,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:55:37,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:55:37,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 06:55:37,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 06:55:37,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 06:55:37,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 06:55:37,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 06:55:37,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 06:55:37,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:55:37,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:55:37,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:55:37,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:55:37,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:55:37,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:55:37,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:55:37,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:55:37,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:55:37,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:55:37,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:55:37,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:55:37,189 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:55:37,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:55:37,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:55:37,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:55:37,194 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:55:37,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:55:37,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:55:37,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:55:37,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:55:37,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:55:37,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:55:37,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:55:37,197 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:55:37,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:55:37,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:55:37,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:55:37,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:55:37,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:55:37,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:55:37,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:55:37,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:55:37,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:55:37,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:55:37,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:55:37,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:55:37,200 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:55:37,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:55:37,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:55:37,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:55:37,632 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:55:37,633 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:55:37,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product43.cil.c [2020-12-22 06:55:37,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fa52be1e/d05469c54adf40f29f08cd88779912c9/FLAGeba60545d [2020-12-22 06:55:38,492 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:55:38,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product43.cil.c [2020-12-22 06:55:38,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fa52be1e/d05469c54adf40f29f08cd88779912c9/FLAGeba60545d [2020-12-22 06:55:38,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fa52be1e/d05469c54adf40f29f08cd88779912c9 [2020-12-22 06:55:38,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:55:38,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:55:38,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:55:38,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:55:38,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:55:38,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:55:38" (1/1) ... [2020-12-22 06:55:38,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c75156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:38, skipping insertion in model container [2020-12-22 06:55:38,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:55:38" (1/1) ... [2020-12-22 06:55:38,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:55:38,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:55:39,016 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_product43.cil.c[2573,2586] [2020-12-22 06:55:39,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:55:39,166 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:55:39,187 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_product43.cil.c[2573,2586] [2020-12-22 06:55:39,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:55:39,284 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:55:39,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:39 WrapperNode [2020-12-22 06:55:39,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:55:39,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:55:39,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:55:39,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:55:39,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:39" (1/1) ... [2020-12-22 06:55:39,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:39" (1/1) ... [2020-12-22 06:55:39,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:55:39,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:55:39,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:55:39,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:55:39,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:39" (1/1) ... [2020-12-22 06:55:39,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:39" (1/1) ... [2020-12-22 06:55:39,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:39" (1/1) ... [2020-12-22 06:55:39,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:39" (1/1) ... [2020-12-22 06:55:39,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:39" (1/1) ... [2020-12-22 06:55:39,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:39" (1/1) ... [2020-12-22 06:55:39,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:39" (1/1) ... [2020-12-22 06:55:39,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:55:39,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:55:39,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:55:39,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:55:39,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:39" (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 06:55:39,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:55:39,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:55:39,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:55:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:55:40,645 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:55:40,646 INFO L299 CfgBuilder]: Removed 124 assume(true) statements. [2020-12-22 06:55:40,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:55:40 BoogieIcfgContainer [2020-12-22 06:55:40,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:55:40,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:55:40,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:55:40,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:55:40,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:55:38" (1/3) ... [2020-12-22 06:55:40,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b36cd19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:55:40, skipping insertion in model container [2020-12-22 06:55:40,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:55:39" (2/3) ... [2020-12-22 06:55:40,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b36cd19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:55:40, skipping insertion in model container [2020-12-22 06:55:40,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:55:40" (3/3) ... [2020-12-22 06:55:40,657 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product43.cil.c [2020-12-22 06:55:40,664 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:55:40,669 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:55:40,688 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:55:40,721 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:55:40,721 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:55:40,721 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:55:40,722 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:55:40,722 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:55:40,722 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:55:40,722 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:55:40,722 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:55:40,746 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2020-12-22 06:55:40,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 06:55:40,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:40,756 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 06:55:40,756 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:40,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:40,764 INFO L82 PathProgramCache]: Analyzing trace with hash 725412282, now seen corresponding path program 1 times [2020-12-22 06:55:40,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:40,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762704418] [2020-12-22 06:55:40,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:41,092 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 06:55:41,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762704418] [2020-12-22 06:55:41,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:41,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:55:41,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412941513] [2020-12-22 06:55:41,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:55:41,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:41,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:55:41,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:55:41,119 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 2 states. [2020-12-22 06:55:41,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:41,153 INFO L93 Difference]: Finished difference Result 184 states and 275 transitions. [2020-12-22 06:55:41,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:55:41,154 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-12-22 06:55:41,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:41,170 INFO L225 Difference]: With dead ends: 184 [2020-12-22 06:55:41,170 INFO L226 Difference]: Without dead ends: 91 [2020-12-22 06:55:41,174 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 06:55:41,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-22 06:55:41,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-12-22 06:55:41,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-22 06:55:41,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 129 transitions. [2020-12-22 06:55:41,223 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 129 transitions. Word has length 18 [2020-12-22 06:55:41,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:41,224 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 129 transitions. [2020-12-22 06:55:41,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:55:41,224 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 129 transitions. [2020-12-22 06:55:41,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 06:55:41,225 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:41,226 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 06:55:41,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:55:41,246 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:41,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:41,248 INFO L82 PathProgramCache]: Analyzing trace with hash -185618471, now seen corresponding path program 1 times [2020-12-22 06:55:41,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:41,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821954299] [2020-12-22 06:55:41,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:41,397 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 06:55:41,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821954299] [2020-12-22 06:55:41,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:41,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:55:41,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982601732] [2020-12-22 06:55:41,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:55:41,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:41,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:55:41,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:55:41,404 INFO L87 Difference]: Start difference. First operand 91 states and 129 transitions. Second operand 3 states. [2020-12-22 06:55:41,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:41,424 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2020-12-22 06:55:41,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:55:41,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 06:55:41,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:41,427 INFO L225 Difference]: With dead ends: 91 [2020-12-22 06:55:41,427 INFO L226 Difference]: Without dead ends: 41 [2020-12-22 06:55:41,429 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 06:55:41,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-22 06:55:41,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-22 06:55:41,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-22 06:55:41,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2020-12-22 06:55:41,440 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 19 [2020-12-22 06:55:41,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:41,441 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2020-12-22 06:55:41,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:55:41,441 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2020-12-22 06:55:41,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 06:55:41,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:41,444 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 06:55:41,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:55:41,446 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:41,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:41,447 INFO L82 PathProgramCache]: Analyzing trace with hash -2096218593, now seen corresponding path program 1 times [2020-12-22 06:55:41,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:41,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083522304] [2020-12-22 06:55:41,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:41,588 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 06:55:41,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083522304] [2020-12-22 06:55:41,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:41,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:55:41,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458857797] [2020-12-22 06:55:41,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:55:41,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:41,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:55:41,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:55:41,592 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand 3 states. [2020-12-22 06:55:41,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:41,626 INFO L93 Difference]: Finished difference Result 111 states and 162 transitions. [2020-12-22 06:55:41,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:55:41,628 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 06:55:41,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:41,630 INFO L225 Difference]: With dead ends: 111 [2020-12-22 06:55:41,630 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 06:55:41,631 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 06:55:41,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 06:55:41,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2020-12-22 06:55:41,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-22 06:55:41,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 105 transitions. [2020-12-22 06:55:41,655 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 105 transitions. Word has length 24 [2020-12-22 06:55:41,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:41,659 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 105 transitions. [2020-12-22 06:55:41,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:55:41,659 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 105 transitions. [2020-12-22 06:55:41,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 06:55:41,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:41,662 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 06:55:41,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:55:41,663 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:41,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:41,663 INFO L82 PathProgramCache]: Analyzing trace with hash 68887907, now seen corresponding path program 1 times [2020-12-22 06:55:41,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:41,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771284649] [2020-12-22 06:55:41,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:41,722 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 06:55:41,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771284649] [2020-12-22 06:55:41,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:41,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:55:41,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033520191] [2020-12-22 06:55:41,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:55:41,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:41,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:55:41,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:55:41,725 INFO L87 Difference]: Start difference. First operand 72 states and 105 transitions. Second operand 3 states. [2020-12-22 06:55:41,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:41,755 INFO L93 Difference]: Finished difference Result 183 states and 272 transitions. [2020-12-22 06:55:41,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:55:41,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 06:55:41,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:41,757 INFO L225 Difference]: With dead ends: 183 [2020-12-22 06:55:41,757 INFO L226 Difference]: Without dead ends: 117 [2020-12-22 06:55:41,758 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 06:55:41,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-22 06:55:41,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2020-12-22 06:55:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-22 06:55:41,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 167 transitions. [2020-12-22 06:55:41,772 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 167 transitions. Word has length 25 [2020-12-22 06:55:41,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:41,773 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 167 transitions. [2020-12-22 06:55:41,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:55:41,773 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 167 transitions. [2020-12-22 06:55:41,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 06:55:41,774 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:41,775 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 06:55:41,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:55:41,775 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:41,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:41,776 INFO L82 PathProgramCache]: Analyzing trace with hash -192728908, now seen corresponding path program 1 times [2020-12-22 06:55:41,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:41,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390049689] [2020-12-22 06:55:41,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:55:41,852 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 06:55:41,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390049689] [2020-12-22 06:55:41,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:55:41,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:55:41,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820898104] [2020-12-22 06:55:41,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:55:41,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:55:41,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:55:41,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:55:41,855 INFO L87 Difference]: Start difference. First operand 115 states and 167 transitions. Second operand 5 states. [2020-12-22 06:55:41,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:55:41,978 INFO L93 Difference]: Finished difference Result 639 states and 947 transitions. [2020-12-22 06:55:41,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:55:41,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-12-22 06:55:41,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:55:41,983 INFO L225 Difference]: With dead ends: 639 [2020-12-22 06:55:41,983 INFO L226 Difference]: Without dead ends: 530 [2020-12-22 06:55:41,984 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 06:55:41,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-12-22 06:55:42,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 210. [2020-12-22 06:55:42,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-12-22 06:55:42,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 296 transitions. [2020-12-22 06:55:42,019 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 296 transitions. Word has length 27 [2020-12-22 06:55:42,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:55:42,019 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 296 transitions. [2020-12-22 06:55:42,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:55:42,020 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 296 transitions. [2020-12-22 06:55:42,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 06:55:42,021 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:55:42,021 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 06:55:42,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:55:42,022 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:55:42,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:55:42,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1892992650, now seen corresponding path program 1 times [2020-12-22 06:55:42,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:55:42,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350354207] [2020-12-22 06:55:42,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:55:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:55:42,095 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:55:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:55:42,204 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:55:42,248 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:55:42,249 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:55:42,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:55:42,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:55:42 BoogieIcfgContainer [2020-12-22 06:55:42,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:55:42,352 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:55:42,352 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:55:42,353 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:55:42,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:55:40" (3/4) ... [2020-12-22 06:55:42,356 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:55:42,494 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec3_product43.cil.c-witness.graphml [2020-12-22 06:55:42,494 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:55:42,497 INFO L168 Benchmark]: Toolchain (without parser) took 3747.92 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 125.5 MB in the beginning and 142.7 MB in the end (delta: -17.2 MB). Peak memory consumption was 26.9 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:42,497 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:55:42,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 532.85 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 104.6 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:42,498 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.33 ms. Allocated memory is still 151.0 MB. Free memory was 104.4 MB in the beginning and 101.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:42,499 INFO L168 Benchmark]: Boogie Preprocessor took 100.59 ms. Allocated memory is still 151.0 MB. Free memory was 101.1 MB in the beginning and 131.9 MB in the end (delta: -30.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:42,499 INFO L168 Benchmark]: RCFGBuilder took 1182.50 ms. Allocated memory is still 151.0 MB. Free memory was 131.9 MB in the beginning and 73.2 MB in the end (delta: 58.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:42,500 INFO L168 Benchmark]: TraceAbstraction took 1701.81 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 72.7 MB in the beginning and 154.3 MB in the end (delta: -81.6 MB). Peak memory consumption was 30.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:42,501 INFO L168 Benchmark]: Witness Printer took 142.12 ms. Allocated memory is still 194.0 MB. Free memory was 154.3 MB in the beginning and 142.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 06:55:42,504 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 532.85 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 104.6 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 77.33 ms. Allocated memory is still 151.0 MB. Free memory was 104.4 MB in the beginning and 101.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 100.59 ms. Allocated memory is still 151.0 MB. Free memory was 101.1 MB in the beginning and 131.9 MB in the end (delta: -30.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1182.50 ms. Allocated memory is still 151.0 MB. Free memory was 131.9 MB in the beginning and 73.2 MB in the end (delta: 58.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1701.81 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 72.7 MB in the beginning and 154.3 MB in the end (delta: -81.6 MB). Peak memory consumption was 30.1 MB. Max. memory is 8.0 GB. * Witness Printer took 142.12 ms. Allocated memory is still 194.0 MB. Free memory was 154.3 MB in the beginning and 142.7 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: 150]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L361] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L599] int pumpRunning = 0; [L600] int systemActive = 1; [L851] int waterLevel = 1; [L852] int methaneLevelCritical = 0; 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] [L584] int retValue_acc ; [L587] retValue_acc = 1 [L588] 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] [L785] int splverifierCounter ; [L786] int tmp ; [L787] int tmp___0 ; [L788] int tmp___1 ; [L789] int tmp___2 ; [L792] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L794] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L796] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L802] tmp = __VERIFIER_nondet_int() [L804] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L869] COND TRUE waterLevel < 2 [L870] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L812] tmp___0 = __VERIFIER_nondet_int() [L814] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L822] tmp___2 = __VERIFIER_nondet_int() [L824] COND FALSE !(\read(tmp___2)) [L828] tmp___1 = __VERIFIER_nondet_int() [L830] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L772] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L779] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L606] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L613] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L159] int tmp ; [L160] int tmp___0 ; [L161] int tmp___1 ; [L890] int retValue_acc ; [L893] retValue_acc = methaneLevelCritical [L894] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L165] tmp = isMethaneLevelCritical() [L167] COND FALSE !(\read(tmp)) [L922] int retValue_acc ; [L925] retValue_acc = waterLevel [L926] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L171] tmp___0 = getWaterLevel() [L173] COND TRUE tmp___0 == 2 [L705] int retValue_acc ; [L708] retValue_acc = pumpRunning [L709] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L175] tmp___1 = isPumpRunning() [L177] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L150] 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, 95 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 395 SDtfs, 377 SDslu, 314 SDs, 0 SdLazy, 56 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=210occurred 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, 326 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 5120 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...