/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:56:35,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:56:35,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:56:35,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:56:35,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:56:35,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:56:35,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:56:35,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:56:35,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:56:35,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:56:35,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:56:35,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:56:35,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:56:35,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:56:35,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:56:35,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:56:35,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:56:35,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:56:35,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:56:35,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:56:35,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:56:35,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:56:35,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:56:35,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:56:35,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:56:35,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:56:35,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:56:35,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:56:35,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:56:35,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:56:35,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:56:35,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:56:35,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:56:35,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:56:35,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:56:35,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:56:35,388 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:56:35,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:56:35,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:56:35,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:56:35,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:56:35,418 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:56:35,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:56:35,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:56:35,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:56:35,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:56:35,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:56:35,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:56:35,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:56:35,420 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:56:35,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:56:35,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:56:35,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:56:35,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:56:35,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:56:35,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:56:35,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:56:35,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:56:35,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:56:35,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:56:35,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:56:35,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:56:35,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:56:35,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:56:35,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:56:35,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:56:35,895 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:56:35,896 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:56:35,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2020-12-22 06:56:35,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00c2c8915/69e28137cc5a4383acfb740985bdfeaf/FLAG89dfa6c38 [2020-12-22 06:56:36,708 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:56:36,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2020-12-22 06:56:36,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00c2c8915/69e28137cc5a4383acfb740985bdfeaf/FLAG89dfa6c38 [2020-12-22 06:56:36,993 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00c2c8915/69e28137cc5a4383acfb740985bdfeaf [2020-12-22 06:56:37,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:56:37,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:56:37,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:56:37,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:56:37,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:56:37,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:37,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a0a3aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37, skipping insertion in model container [2020-12-22 06:56:37,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:37,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:56:37,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:56:37,419 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c[15172,15185] [2020-12-22 06:56:37,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:56:37,455 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:56:37,576 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c[15172,15185] [2020-12-22 06:56:37,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:56:37,676 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:56:37,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37 WrapperNode [2020-12-22 06:56:37,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:56:37,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:56:37,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:56:37,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:56:37,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:37,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:37,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:56:37,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:56:37,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:56:37,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:56:37,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:37,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:37,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:37,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:37,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:37,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:37,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... [2020-12-22 06:56:37,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:56:37,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:56:37,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:56:37,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:56:37,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:56:38,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:56:38,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:56:38,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:56:38,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:56:39,161 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:56:39,161 INFO L299 CfgBuilder]: Removed 160 assume(true) statements. [2020-12-22 06:56:39,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:39 BoogieIcfgContainer [2020-12-22 06:56:39,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:56:39,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:56:39,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:56:39,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:56:39,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:56:37" (1/3) ... [2020-12-22 06:56:39,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c49b996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:39, skipping insertion in model container [2020-12-22 06:56:39,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:37" (2/3) ... [2020-12-22 06:56:39,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c49b996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:39, skipping insertion in model container [2020-12-22 06:56:39,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:39" (3/3) ... [2020-12-22 06:56:39,173 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2020-12-22 06:56:39,180 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:56:39,185 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:56:39,208 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:56:39,237 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:56:39,237 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:56:39,238 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:56:39,238 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:56:39,238 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:56:39,238 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:56:39,238 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:56:39,238 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:56:39,260 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states. [2020-12-22 06:56:39,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 06:56:39,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:39,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:39,268 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:39,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:39,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1221872895, now seen corresponding path program 1 times [2020-12-22 06:56:39,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:39,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028087026] [2020-12-22 06:56:39,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:39,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:39,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028087026] [2020-12-22 06:56:39,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:39,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:56:39,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869664788] [2020-12-22 06:56:39,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:56:39,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:39,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:56:39,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:56:39,618 INFO L87 Difference]: Start difference. First operand 113 states. Second operand 2 states. [2020-12-22 06:56:39,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:39,673 INFO L93 Difference]: Finished difference Result 220 states and 335 transitions. [2020-12-22 06:56:39,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:56:39,675 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-22 06:56:39,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:39,689 INFO L225 Difference]: With dead ends: 220 [2020-12-22 06:56:39,690 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 06:56:39,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:56:39,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 06:56:39,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-12-22 06:56:39,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-22 06:56:39,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2020-12-22 06:56:39,746 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2020-12-22 06:56:39,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:39,747 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2020-12-22 06:56:39,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:56:39,747 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2020-12-22 06:56:39,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 06:56:39,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:39,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:39,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:56:39,749 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:39,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:39,750 INFO L82 PathProgramCache]: Analyzing trace with hash 175115998, now seen corresponding path program 1 times [2020-12-22 06:56:39,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:39,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142809697] [2020-12-22 06:56:39,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:39,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142809697] [2020-12-22 06:56:39,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:39,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:56:39,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728050537] [2020-12-22 06:56:39,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:39,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:39,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:39,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:39,868 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 3 states. [2020-12-22 06:56:39,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:39,882 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2020-12-22 06:56:39,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:39,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 06:56:39,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:39,891 INFO L225 Difference]: With dead ends: 109 [2020-12-22 06:56:39,891 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 06:56:39,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:39,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 06:56:39,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-22 06:56:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 06:56:39,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2020-12-22 06:56:39,900 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2020-12-22 06:56:39,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:39,900 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2020-12-22 06:56:39,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:39,900 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2020-12-22 06:56:39,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 06:56:39,901 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:39,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:39,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:56:39,902 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:39,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:39,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1744081540, now seen corresponding path program 1 times [2020-12-22 06:56:39,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:39,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356276204] [2020-12-22 06:56:39,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:40,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356276204] [2020-12-22 06:56:40,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:40,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:40,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425641069] [2020-12-22 06:56:40,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:56:40,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:40,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:56:40,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:56:40,041 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 6 states. [2020-12-22 06:56:40,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:40,363 INFO L93 Difference]: Finished difference Result 152 states and 226 transitions. [2020-12-22 06:56:40,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:40,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-22 06:56:40,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:40,366 INFO L225 Difference]: With dead ends: 152 [2020-12-22 06:56:40,366 INFO L226 Difference]: Without dead ends: 111 [2020-12-22 06:56:40,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:40,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-12-22 06:56:40,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 66. [2020-12-22 06:56:40,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 06:56:40,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2020-12-22 06:56:40,390 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 22 [2020-12-22 06:56:40,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:40,391 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2020-12-22 06:56:40,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:56:40,391 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2020-12-22 06:56:40,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 06:56:40,392 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:40,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:40,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:56:40,393 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:40,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:40,394 INFO L82 PathProgramCache]: Analyzing trace with hash -595366227, now seen corresponding path program 1 times [2020-12-22 06:56:40,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:40,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325509419] [2020-12-22 06:56:40,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:40,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325509419] [2020-12-22 06:56:40,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:40,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:56:40,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389797317] [2020-12-22 06:56:40,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:40,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:40,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:40,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:40,468 INFO L87 Difference]: Start difference. First operand 66 states and 97 transitions. Second operand 3 states. [2020-12-22 06:56:40,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:40,510 INFO L93 Difference]: Finished difference Result 147 states and 218 transitions. [2020-12-22 06:56:40,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:40,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 06:56:40,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:40,512 INFO L225 Difference]: With dead ends: 147 [2020-12-22 06:56:40,513 INFO L226 Difference]: Without dead ends: 87 [2020-12-22 06:56:40,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:40,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-22 06:56:40,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-12-22 06:56:40,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-22 06:56:40,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2020-12-22 06:56:40,529 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 24 [2020-12-22 06:56:40,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:40,529 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2020-12-22 06:56:40,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:40,529 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2020-12-22 06:56:40,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 06:56:40,530 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:40,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:40,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:56:40,531 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:40,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:40,532 INFO L82 PathProgramCache]: Analyzing trace with hash 566175321, now seen corresponding path program 1 times [2020-12-22 06:56:40,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:40,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303321900] [2020-12-22 06:56:40,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:40,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303321900] [2020-12-22 06:56:40,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:40,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:56:40,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248212578] [2020-12-22 06:56:40,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:40,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:40,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:40,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:40,641 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand 5 states. [2020-12-22 06:56:40,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:40,764 INFO L93 Difference]: Finished difference Result 301 states and 436 transitions. [2020-12-22 06:56:40,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:40,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-12-22 06:56:40,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:40,768 INFO L225 Difference]: With dead ends: 301 [2020-12-22 06:56:40,768 INFO L226 Difference]: Without dead ends: 222 [2020-12-22 06:56:40,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:40,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-12-22 06:56:40,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 144. [2020-12-22 06:56:40,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-12-22 06:56:40,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 200 transitions. [2020-12-22 06:56:40,794 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 200 transitions. Word has length 25 [2020-12-22 06:56:40,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:40,794 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 200 transitions. [2020-12-22 06:56:40,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:40,795 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 200 transitions. [2020-12-22 06:56:40,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 06:56:40,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:40,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:40,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:56:40,797 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:40,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:40,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1393133669, now seen corresponding path program 1 times [2020-12-22 06:56:40,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:40,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419833964] [2020-12-22 06:56:40,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:40,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:40,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419833964] [2020-12-22 06:56:40,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:40,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:56:40,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988611968] [2020-12-22 06:56:40,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:40,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:40,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:40,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:40,887 INFO L87 Difference]: Start difference. First operand 144 states and 200 transitions. Second operand 5 states. [2020-12-22 06:56:41,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:41,018 INFO L93 Difference]: Finished difference Result 297 states and 421 transitions. [2020-12-22 06:56:41,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:56:41,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-22 06:56:41,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:41,021 INFO L225 Difference]: With dead ends: 297 [2020-12-22 06:56:41,021 INFO L226 Difference]: Without dead ends: 295 [2020-12-22 06:56:41,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:56:41,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-12-22 06:56:41,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 144. [2020-12-22 06:56:41,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-12-22 06:56:41,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 198 transitions. [2020-12-22 06:56:41,042 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 198 transitions. Word has length 26 [2020-12-22 06:56:41,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:41,042 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 198 transitions. [2020-12-22 06:56:41,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:41,043 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 198 transitions. [2020-12-22 06:56:41,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:56:41,044 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:41,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:41,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:56:41,045 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:41,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:41,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1756729668, now seen corresponding path program 1 times [2020-12-22 06:56:41,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:41,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038662759] [2020-12-22 06:56:41,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:41,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038662759] [2020-12-22 06:56:41,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:41,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:56:41,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515859355] [2020-12-22 06:56:41,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:56:41,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:41,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:56:41,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:56:41,114 INFO L87 Difference]: Start difference. First operand 144 states and 198 transitions. Second operand 4 states. [2020-12-22 06:56:41,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:41,259 INFO L93 Difference]: Finished difference Result 295 states and 413 transitions. [2020-12-22 06:56:41,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:56:41,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-12-22 06:56:41,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:41,261 INFO L225 Difference]: With dead ends: 295 [2020-12-22 06:56:41,261 INFO L226 Difference]: Without dead ends: 216 [2020-12-22 06:56:41,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:56:41,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-12-22 06:56:41,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2020-12-22 06:56:41,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-12-22 06:56:41,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 293 transitions. [2020-12-22 06:56:41,284 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 293 transitions. Word has length 31 [2020-12-22 06:56:41,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:41,284 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 293 transitions. [2020-12-22 06:56:41,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:56:41,285 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 293 transitions. [2020-12-22 06:56:41,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:56:41,286 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:41,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:41,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:56:41,287 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:41,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:41,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1498564230, now seen corresponding path program 1 times [2020-12-22 06:56:41,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:41,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818865173] [2020-12-22 06:56:41,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:41,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:41,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818865173] [2020-12-22 06:56:41,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:41,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:56:41,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334850803] [2020-12-22 06:56:41,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:56:41,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:41,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:56:41,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:56:41,359 INFO L87 Difference]: Start difference. First operand 213 states and 293 transitions. Second operand 4 states. [2020-12-22 06:56:41,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:41,441 INFO L93 Difference]: Finished difference Result 635 states and 886 transitions. [2020-12-22 06:56:41,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:56:41,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-12-22 06:56:41,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:41,445 INFO L225 Difference]: With dead ends: 635 [2020-12-22 06:56:41,445 INFO L226 Difference]: Without dead ends: 486 [2020-12-22 06:56:41,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:41,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-12-22 06:56:41,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 213. [2020-12-22 06:56:41,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-12-22 06:56:41,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 291 transitions. [2020-12-22 06:56:41,473 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 291 transitions. Word has length 31 [2020-12-22 06:56:41,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:41,474 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 291 transitions. [2020-12-22 06:56:41,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:56:41,474 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 291 transitions. [2020-12-22 06:56:41,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:56:41,475 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:41,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:41,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:56:41,476 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:41,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:41,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1891591240, now seen corresponding path program 1 times [2020-12-22 06:56:41,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:41,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715316313] [2020-12-22 06:56:41,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:41,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715316313] [2020-12-22 06:56:41,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:41,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:41,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995743465] [2020-12-22 06:56:41,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:41,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:41,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:41,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:41,537 INFO L87 Difference]: Start difference. First operand 213 states and 291 transitions. Second operand 5 states. [2020-12-22 06:56:41,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:41,754 INFO L93 Difference]: Finished difference Result 460 states and 638 transitions. [2020-12-22 06:56:41,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:41,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-22 06:56:41,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:41,757 INFO L225 Difference]: With dead ends: 460 [2020-12-22 06:56:41,757 INFO L226 Difference]: Without dead ends: 311 [2020-12-22 06:56:41,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:41,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-12-22 06:56:41,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 239. [2020-12-22 06:56:41,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-12-22 06:56:41,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 329 transitions. [2020-12-22 06:56:41,789 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 329 transitions. Word has length 31 [2020-12-22 06:56:41,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:41,793 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 329 transitions. [2020-12-22 06:56:41,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:41,794 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 329 transitions. [2020-12-22 06:56:41,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:56:41,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:41,799 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:41,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:56:41,799 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:41,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:41,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1761073962, now seen corresponding path program 1 times [2020-12-22 06:56:41,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:41,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461769705] [2020-12-22 06:56:41,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:56:41,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461769705] [2020-12-22 06:56:41,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:41,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:41,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786284932] [2020-12-22 06:56:41,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:41,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:41,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:41,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:41,913 INFO L87 Difference]: Start difference. First operand 239 states and 329 transitions. Second operand 5 states. [2020-12-22 06:56:42,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:42,043 INFO L93 Difference]: Finished difference Result 733 states and 1010 transitions. [2020-12-22 06:56:42,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:42,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-12-22 06:56:42,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:42,053 INFO L225 Difference]: With dead ends: 733 [2020-12-22 06:56:42,054 INFO L226 Difference]: Without dead ends: 500 [2020-12-22 06:56:42,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:56:42,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-12-22 06:56:42,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 248. [2020-12-22 06:56:42,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-12-22 06:56:42,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 338 transitions. [2020-12-22 06:56:42,089 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 338 transitions. Word has length 49 [2020-12-22 06:56:42,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:42,091 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 338 transitions. [2020-12-22 06:56:42,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:42,091 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 338 transitions. [2020-12-22 06:56:42,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:56:42,111 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:42,111 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:42,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:56:42,111 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:42,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:42,112 INFO L82 PathProgramCache]: Analyzing trace with hash -374870568, now seen corresponding path program 1 times [2020-12-22 06:56:42,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:42,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530274540] [2020-12-22 06:56:42,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:42,185 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:56:42,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530274540] [2020-12-22 06:56:42,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:42,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:56:42,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242003005] [2020-12-22 06:56:42,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:56:42,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:42,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:56:42,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:56:42,192 INFO L87 Difference]: Start difference. First operand 248 states and 338 transitions. Second operand 6 states. [2020-12-22 06:56:42,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:42,313 INFO L93 Difference]: Finished difference Result 584 states and 796 transitions. [2020-12-22 06:56:42,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:42,314 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-12-22 06:56:42,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:42,316 INFO L225 Difference]: With dead ends: 584 [2020-12-22 06:56:42,317 INFO L226 Difference]: Without dead ends: 342 [2020-12-22 06:56:42,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:56:42,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-12-22 06:56:42,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 216. [2020-12-22 06:56:42,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-12-22 06:56:42,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 288 transitions. [2020-12-22 06:56:42,352 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 288 transitions. Word has length 49 [2020-12-22 06:56:42,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:42,353 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 288 transitions. [2020-12-22 06:56:42,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:56:42,353 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 288 transitions. [2020-12-22 06:56:42,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 06:56:42,354 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:42,354 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:42,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:56:42,354 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:42,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:42,355 INFO L82 PathProgramCache]: Analyzing trace with hash -2038322788, now seen corresponding path program 1 times [2020-12-22 06:56:42,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:42,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493490918] [2020-12-22 06:56:42,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:42,470 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:42,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493490918] [2020-12-22 06:56:42,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085538806] [2020-12-22 06:56:42,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:56:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:42,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 06:56:42,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:56:42,754 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:42,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:56:42,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-12-22 06:56:42,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863423682] [2020-12-22 06:56:42,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:56:42,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:42,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:56:42,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:56:42,756 INFO L87 Difference]: Start difference. First operand 216 states and 288 transitions. Second operand 6 states. [2020-12-22 06:56:43,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:43,117 INFO L93 Difference]: Finished difference Result 608 states and 825 transitions. [2020-12-22 06:56:43,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:56:43,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-12-22 06:56:43,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:43,122 INFO L225 Difference]: With dead ends: 608 [2020-12-22 06:56:43,122 INFO L226 Difference]: Without dead ends: 446 [2020-12-22 06:56:43,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:56:43,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-12-22 06:56:43,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 262. [2020-12-22 06:56:43,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-22 06:56:43,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 349 transitions. [2020-12-22 06:56:43,182 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 349 transitions. Word has length 50 [2020-12-22 06:56:43,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:43,184 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 349 transitions. [2020-12-22 06:56:43,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:56:43,184 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 349 transitions. [2020-12-22 06:56:43,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:56:43,186 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:43,186 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:43,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 06:56:43,401 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:43,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:43,402 INFO L82 PathProgramCache]: Analyzing trace with hash 564554040, now seen corresponding path program 2 times [2020-12-22 06:56:43,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:43,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666510556] [2020-12-22 06:56:43,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:56:43,483 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:56:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:56:43,558 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:56:43,622 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:56:43,622 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:56:43,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:56:43,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:56:43 BoogieIcfgContainer [2020-12-22 06:56:43,768 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:56:43,768 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:56:43,768 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:56:43,769 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:56:43,769 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:39" (3/4) ... [2020-12-22 06:56:43,771 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:56:43,955 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec4_product39.cil.c-witness.graphml [2020-12-22 06:56:43,957 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:56:43,959 INFO L168 Benchmark]: Toolchain (without parser) took 6954.05 ms. Allocated memory was 161.5 MB in the beginning and 243.3 MB in the end (delta: 81.8 MB). Free memory was 135.1 MB in the beginning and 217.3 MB in the end (delta: -82.2 MB). Peak memory consumption was 113.3 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:43,960 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 161.5 MB. Free memory is still 142.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:56:43,961 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.11 ms. Allocated memory is still 161.5 MB. Free memory was 134.9 MB in the beginning and 139.7 MB in the end (delta: -4.8 MB). Peak memory consumption was 24.7 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:43,962 INFO L168 Benchmark]: Boogie Procedure Inliner took 137.00 ms. Allocated memory is still 161.5 MB. Free memory was 139.7 MB in the beginning and 136.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:43,962 INFO L168 Benchmark]: Boogie Preprocessor took 104.09 ms. Allocated memory is still 161.5 MB. Free memory was 136.1 MB in the beginning and 133.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:43,963 INFO L168 Benchmark]: RCFGBuilder took 1237.95 ms. Allocated memory is still 161.5 MB. Free memory was 133.4 MB in the beginning and 112.0 MB in the end (delta: 21.4 MB). Peak memory consumption was 36.6 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:43,965 INFO L168 Benchmark]: TraceAbstraction took 4602.63 ms. Allocated memory was 161.5 MB in the beginning and 202.4 MB in the end (delta: 40.9 MB). Free memory was 111.5 MB in the beginning and 88.3 MB in the end (delta: 23.2 MB). Peak memory consumption was 63.6 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:43,965 INFO L168 Benchmark]: Witness Printer took 189.07 ms. Allocated memory was 202.4 MB in the beginning and 243.3 MB in the end (delta: 40.9 MB). Free memory was 88.3 MB in the beginning and 217.3 MB in the end (delta: -129.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:43,968 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 161.5 MB. Free memory is still 142.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 671.11 ms. Allocated memory is still 161.5 MB. Free memory was 134.9 MB in the beginning and 139.7 MB in the end (delta: -4.8 MB). Peak memory consumption was 24.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 137.00 ms. Allocated memory is still 161.5 MB. Free memory was 139.7 MB in the beginning and 136.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 104.09 ms. Allocated memory is still 161.5 MB. Free memory was 136.1 MB in the beginning and 133.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1237.95 ms. Allocated memory is still 161.5 MB. Free memory was 133.4 MB in the beginning and 112.0 MB in the end (delta: 21.4 MB). Peak memory consumption was 36.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4602.63 ms. Allocated memory was 161.5 MB in the beginning and 202.4 MB in the end (delta: 40.9 MB). Free memory was 111.5 MB in the beginning and 88.3 MB in the end (delta: 23.2 MB). Peak memory consumption was 63.6 MB. Max. memory is 8.0 GB. * Witness Printer took 189.07 ms. Allocated memory was 202.4 MB in the beginning and 243.3 MB in the end (delta: 40.9 MB). Free memory was 88.3 MB in the beginning and 217.3 MB in the end (delta: -129.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 724]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L526] int pumpRunning = 0; [L527] int systemActive = 1; [L730] int waterLevel = 1; [L731] int methaneLevelCritical = 0; [L824] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L897] int retValue_acc ; [L898] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L904] tmp = valid_product() [L906] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L452] int splverifierCounter ; [L453] int tmp ; [L454] int tmp___0 ; [L455] int tmp___1 ; [L456] int tmp___2 ; [L459] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L461] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L463] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L469] tmp = __VERIFIER_nondet_int() [L471] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L748] COND TRUE waterLevel < 2 [L749] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L479] tmp___0 = __VERIFIER_nondet_int() [L481] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L489] tmp___2 = __VERIFIER_nondet_int() [L491] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L534] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L541] COND TRUE \read(systemActive) [L589] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L592] COND FALSE !(\read(pumpRunning)) [L563] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L566] COND TRUE ! pumpRunning [L686] int retValue_acc ; [L687] int tmp ; [L688] int tmp___0 ; [L810] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L813] COND FALSE !(waterLevel < 2) [L817] retValue_acc = 0 [L818] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L692] tmp = isHighWaterSensorDry() [L694] COND FALSE !(\read(tmp)) [L697] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L699] retValue_acc = tmp___0 [L700] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L568] tmp = isHighWaterLevel() [L570] COND TRUE \read(tmp) [L617] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L921] int tmp ; [L922] int tmp___0 ; [L801] int retValue_acc ; [L804] retValue_acc = waterLevel [L805] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L926] tmp = getWaterLevel() [L928] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L461] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L463] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L469] tmp = __VERIFIER_nondet_int() [L471] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L479] tmp___0 = __VERIFIER_nondet_int() [L481] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L489] tmp___2 = __VERIFIER_nondet_int() [L491] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L534] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L736] COND TRUE waterLevel > 0 [L737] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L541] COND TRUE \read(systemActive) [L589] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L592] COND TRUE \read(pumpRunning) [L630] int retValue_acc ; [L769] int retValue_acc ; [L772] retValue_acc = methaneLevelCritical [L773] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L634] retValue_acc = isMethaneLevelCritical() [L636] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L594] tmp = isMethaneAlarm() [L596] COND FALSE !(\read(tmp)) [L563] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L566] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L921] int tmp ; [L922] int tmp___0 ; [L801] int retValue_acc ; [L804] retValue_acc = waterLevel [L805] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L926] tmp = getWaterLevel() [L928] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L461] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L463] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L469] tmp = __VERIFIER_nondet_int() [L471] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L479] tmp___0 = __VERIFIER_nondet_int() [L481] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L489] tmp___2 = __VERIFIER_nondet_int() [L491] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L534] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L736] COND TRUE waterLevel > 0 [L737] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L541] COND TRUE \read(systemActive) [L589] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L592] COND TRUE \read(pumpRunning) [L630] int retValue_acc ; [L769] int retValue_acc ; [L772] retValue_acc = methaneLevelCritical [L773] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L634] retValue_acc = isMethaneLevelCritical() [L636] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L594] tmp = isMethaneAlarm() [L596] COND FALSE !(\read(tmp)) [L563] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L566] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L921] int tmp ; [L922] int tmp___0 ; [L801] int retValue_acc ; [L804] retValue_acc = waterLevel [L805] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L926] tmp = getWaterLevel() [L928] COND TRUE tmp == 0 [L641] int retValue_acc ; [L644] retValue_acc = pumpRunning [L645] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L930] tmp___0 = isPumpRunning() [L932] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L724] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 113 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1314 SDtfs, 1685 SDslu, 2065 SDs, 0 SdLazy, 311 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 1186 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 490 NumberOfCodeBlocks, 490 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 408 ConstructedInterpolants, 0 QuantifiedInterpolants, 26477 SizeOfPredicates, 3 NumberOfNonLiveVariables, 416 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 50/56 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...