./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product43.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f6fb2bb1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product43.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b50f176f9cc083683ce70010cc4357ff865e696 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-f6fb2bb [2019-11-19 18:57:38,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 18:57:38,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 18:57:38,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 18:57:38,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 18:57:38,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 18:57:38,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 18:57:38,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 18:57:38,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 18:57:38,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 18:57:38,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 18:57:38,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 18:57:38,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 18:57:38,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 18:57:38,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 18:57:38,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 18:57:38,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 18:57:38,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 18:57:38,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 18:57:38,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 18:57:38,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 18:57:38,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 18:57:38,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 18:57:38,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 18:57:38,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 18:57:38,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 18:57:38,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 18:57:38,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 18:57:38,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 18:57:38,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 18:57:38,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 18:57:38,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 18:57:38,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 18:57:38,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 18:57:38,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 18:57:38,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 18:57:38,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 18:57:38,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 18:57:38,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 18:57:38,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 18:57:38,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 18:57:38,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 18:57:38,373 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 18:57:38,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 18:57:38,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 18:57:38,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 18:57:38,376 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 18:57:38,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 18:57:38,376 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 18:57:38,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 18:57:38,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 18:57:38,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 18:57:38,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 18:57:38,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 18:57:38,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 18:57:38,378 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 18:57:38,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 18:57:38,378 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 18:57:38,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 18:57:38,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 18:57:38,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 18:57:38,379 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 18:57:38,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 18:57:38,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 18:57:38,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 18:57:38,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 18:57:38,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 18:57:38,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 18:57:38,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 18:57:38,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 18:57:38,381 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b50f176f9cc083683ce70010cc4357ff865e696 [2019-11-19 18:57:38,698 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 18:57:38,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 18:57:38,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 18:57:38,716 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 18:57:38,717 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 18:57:38,718 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product43.cil.c [2019-11-19 18:57:38,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d3ba42cd/27c7c5772c424b499357775696ab2e4d/FLAG68b36e48e [2019-11-19 18:57:39,329 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 18:57:39,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product43.cil.c [2019-11-19 18:57:39,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d3ba42cd/27c7c5772c424b499357775696ab2e4d/FLAG68b36e48e [2019-11-19 18:57:39,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d3ba42cd/27c7c5772c424b499357775696ab2e4d [2019-11-19 18:57:39,614 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 18:57:39,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 18:57:39,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 18:57:39,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 18:57:39,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 18:57:39,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:57:39" (1/1) ... [2019-11-19 18:57:39,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0505fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:39, skipping insertion in model container [2019-11-19 18:57:39,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:57:39" (1/1) ... [2019-11-19 18:57:39,633 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 18:57:39,695 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 18:57:40,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 18:57:40,105 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 18:57:40,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 18:57:40,221 INFO L192 MainTranslator]: Completed translation [2019-11-19 18:57:40,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:40 WrapperNode [2019-11-19 18:57:40,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 18:57:40,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 18:57:40,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 18:57:40,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 18:57:40,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:40" (1/1) ... [2019-11-19 18:57:40,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:40" (1/1) ... [2019-11-19 18:57:40,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 18:57:40,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 18:57:40,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 18:57:40,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 18:57:40,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:40" (1/1) ... [2019-11-19 18:57:40,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:40" (1/1) ... [2019-11-19 18:57:40,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:40" (1/1) ... [2019-11-19 18:57:40,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:40" (1/1) ... [2019-11-19 18:57:40,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:40" (1/1) ... [2019-11-19 18:57:40,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:40" (1/1) ... [2019-11-19 18:57:40,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:40" (1/1) ... [2019-11-19 18:57:40,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 18:57:40,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 18:57:40,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 18:57:40,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 18:57:40,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 18:57:40,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 18:57:40,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-19 18:57:40,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 18:57:40,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 18:57:41,246 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 18:57:41,246 INFO L285 CfgBuilder]: Removed 124 assume(true) statements. [2019-11-19 18:57:41,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:57:41 BoogieIcfgContainer [2019-11-19 18:57:41,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 18:57:41,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 18:57:41,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 18:57:41,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 18:57:41,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:57:39" (1/3) ... [2019-11-19 18:57:41,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7555c1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:57:41, skipping insertion in model container [2019-11-19 18:57:41,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:57:40" (2/3) ... [2019-11-19 18:57:41,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7555c1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:57:41, skipping insertion in model container [2019-11-19 18:57:41,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:57:41" (3/3) ... [2019-11-19 18:57:41,261 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product43.cil.c [2019-11-19 18:57:41,270 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 18:57:41,278 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-19 18:57:41,287 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-19 18:57:41,310 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 18:57:41,310 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 18:57:41,313 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 18:57:41,313 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 18:57:41,314 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 18:57:41,314 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 18:57:41,314 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 18:57:41,315 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 18:57:41,344 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-11-19 18:57:41,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-19 18:57:41,355 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 18:57:41,356 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 18:57:41,357 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 18:57:41,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 18:57:41,364 INFO L82 PathProgramCache]: Analyzing trace with hash 725412282, now seen corresponding path program 1 times [2019-11-19 18:57:41,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 18:57:41,374 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159852013] [2019-11-19 18:57:41,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 18:57:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 18:57:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 18:57:41,717 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159852013] [2019-11-19 18:57:41,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 18:57:41,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 18:57:41,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709608051] [2019-11-19 18:57:41,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 18:57:41,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 18:57:41,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 18:57:41,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 18:57:41,754 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 2 states. [2019-11-19 18:57:41,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 18:57:41,829 INFO L93 Difference]: Finished difference Result 184 states and 275 transitions. [2019-11-19 18:57:41,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 18:57:41,833 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-11-19 18:57:41,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 18:57:41,853 INFO L225 Difference]: With dead ends: 184 [2019-11-19 18:57:41,853 INFO L226 Difference]: Without dead ends: 91 [2019-11-19 18:57:41,861 INFO L630 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 [2019-11-19 18:57:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-11-19 18:57:41,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2019-11-19 18:57:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-11-19 18:57:41,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 129 transitions. [2019-11-19 18:57:41,935 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 129 transitions. Word has length 18 [2019-11-19 18:57:41,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 18:57:41,936 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 129 transitions. [2019-11-19 18:57:41,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 18:57:41,936 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 129 transitions. [2019-11-19 18:57:41,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-19 18:57:41,939 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 18:57:41,939 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 18:57:41,940 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 18:57:41,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 18:57:41,940 INFO L82 PathProgramCache]: Analyzing trace with hash -185618471, now seen corresponding path program 1 times [2019-11-19 18:57:41,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 18:57:41,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650493975] [2019-11-19 18:57:41,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 18:57:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 18:57:42,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 18:57:42,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650493975] [2019-11-19 18:57:42,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 18:57:42,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 18:57:42,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732019024] [2019-11-19 18:57:42,102 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 18:57:42,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 18:57:42,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 18:57:42,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 18:57:42,104 INFO L87 Difference]: Start difference. First operand 91 states and 129 transitions. Second operand 3 states. [2019-11-19 18:57:42,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 18:57:42,123 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2019-11-19 18:57:42,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 18:57:42,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-19 18:57:42,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 18:57:42,128 INFO L225 Difference]: With dead ends: 91 [2019-11-19 18:57:42,128 INFO L226 Difference]: Without dead ends: 41 [2019-11-19 18:57:42,130 INFO L630 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 [2019-11-19 18:57:42,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-19 18:57:42,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-11-19 18:57:42,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-19 18:57:42,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2019-11-19 18:57:42,144 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 19 [2019-11-19 18:57:42,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 18:57:42,144 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2019-11-19 18:57:42,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 18:57:42,144 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2019-11-19 18:57:42,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-19 18:57:42,146 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 18:57:42,146 INFO L410 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] [2019-11-19 18:57:42,147 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 18:57:42,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 18:57:42,148 INFO L82 PathProgramCache]: Analyzing trace with hash -2096218593, now seen corresponding path program 1 times [2019-11-19 18:57:42,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 18:57:42,148 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612788041] [2019-11-19 18:57:42,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 18:57:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 18:57:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 18:57:42,299 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612788041] [2019-11-19 18:57:42,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 18:57:42,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 18:57:42,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479191223] [2019-11-19 18:57:42,301 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 18:57:42,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 18:57:42,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 18:57:42,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-19 18:57:42,302 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand 6 states. [2019-11-19 18:57:42,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 18:57:42,436 INFO L93 Difference]: Finished difference Result 136 states and 199 transitions. [2019-11-19 18:57:42,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 18:57:42,437 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-11-19 18:57:42,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 18:57:42,439 INFO L225 Difference]: With dead ends: 136 [2019-11-19 18:57:42,439 INFO L226 Difference]: Without dead ends: 101 [2019-11-19 18:57:42,440 INFO L630 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 [2019-11-19 18:57:42,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-19 18:57:42,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 62. [2019-11-19 18:57:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-19 18:57:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 90 transitions. [2019-11-19 18:57:42,453 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 90 transitions. Word has length 24 [2019-11-19 18:57:42,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 18:57:42,453 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 90 transitions. [2019-11-19 18:57:42,453 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 18:57:42,454 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 90 transitions. [2019-11-19 18:57:42,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-19 18:57:42,455 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 18:57:42,455 INFO L410 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] [2019-11-19 18:57:42,456 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 18:57:42,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 18:57:42,456 INFO L82 PathProgramCache]: Analyzing trace with hash 68887907, now seen corresponding path program 1 times [2019-11-19 18:57:42,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 18:57:42,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633224650] [2019-11-19 18:57:42,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 18:57:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 18:57:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 18:57:42,510 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633224650] [2019-11-19 18:57:42,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 18:57:42,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 18:57:42,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582603801] [2019-11-19 18:57:42,511 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 18:57:42,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 18:57:42,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 18:57:42,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 18:57:42,513 INFO L87 Difference]: Start difference. First operand 62 states and 90 transitions. Second operand 3 states. [2019-11-19 18:57:42,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 18:57:42,548 INFO L93 Difference]: Finished difference Result 141 states and 207 transitions. [2019-11-19 18:57:42,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 18:57:42,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-19 18:57:42,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 18:57:42,551 INFO L225 Difference]: With dead ends: 141 [2019-11-19 18:57:42,551 INFO L226 Difference]: Without dead ends: 85 [2019-11-19 18:57:42,552 INFO L630 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 [2019-11-19 18:57:42,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-11-19 18:57:42,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2019-11-19 18:57:42,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-11-19 18:57:42,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 118 transitions. [2019-11-19 18:57:42,565 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 118 transitions. Word has length 25 [2019-11-19 18:57:42,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 18:57:42,565 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 118 transitions. [2019-11-19 18:57:42,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 18:57:42,566 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 118 transitions. [2019-11-19 18:57:42,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-19 18:57:42,567 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 18:57:42,567 INFO L410 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] [2019-11-19 18:57:42,568 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 18:57:42,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 18:57:42,568 INFO L82 PathProgramCache]: Analyzing trace with hash -192728908, now seen corresponding path program 1 times [2019-11-19 18:57:42,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 18:57:42,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225813290] [2019-11-19 18:57:42,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 18:57:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 18:57:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 18:57:42,642 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225813290] [2019-11-19 18:57:42,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 18:57:42,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 18:57:42,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727545684] [2019-11-19 18:57:42,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 18:57:42,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 18:57:42,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 18:57:42,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 18:57:42,644 INFO L87 Difference]: Start difference. First operand 83 states and 118 transitions. Second operand 5 states. [2019-11-19 18:57:42,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 18:57:42,783 INFO L93 Difference]: Finished difference Result 448 states and 656 transitions. [2019-11-19 18:57:42,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 18:57:42,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-11-19 18:57:42,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 18:57:42,787 INFO L225 Difference]: With dead ends: 448 [2019-11-19 18:57:42,787 INFO L226 Difference]: Without dead ends: 371 [2019-11-19 18:57:42,789 INFO L630 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 [2019-11-19 18:57:42,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2019-11-19 18:57:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 150. [2019-11-19 18:57:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-19 18:57:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 209 transitions. [2019-11-19 18:57:42,814 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 209 transitions. Word has length 27 [2019-11-19 18:57:42,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 18:57:42,815 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 209 transitions. [2019-11-19 18:57:42,815 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 18:57:42,815 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 209 transitions. [2019-11-19 18:57:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-19 18:57:42,817 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 18:57:42,817 INFO L410 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] [2019-11-19 18:57:42,817 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 18:57:42,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 18:57:42,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1892992650, now seen corresponding path program 1 times [2019-11-19 18:57:42,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 18:57:42,819 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907421866] [2019-11-19 18:57:42,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 18:57:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 18:57:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 18:57:43,682 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 18:57:43,683 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 18:57:43,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:57:43 BoogieIcfgContainer [2019-11-19 18:57:43,790 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 18:57:43,791 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 18:57:43,791 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 18:57:43,791 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 18:57:43,792 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:57:41" (3/4) ... [2019-11-19 18:57:43,795 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 18:57:43,910 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 18:57:43,910 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 18:57:43,915 INFO L168 Benchmark]: Toolchain (without parser) took 4296.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -184.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. [2019-11-19 18:57:43,915 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 18:57:43,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -141.0 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2019-11-19 18:57:43,917 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 11.5 GB. [2019-11-19 18:57:43,917 INFO L168 Benchmark]: Boogie Preprocessor took 45.11 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 18:57:43,918 INFO L168 Benchmark]: RCFGBuilder took 905.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 65.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 11.5 GB. [2019-11-19 18:57:43,919 INFO L168 Benchmark]: TraceAbstraction took 2540.07 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 84.9 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -133.9 MB). Peak memory consumption was 253.0 MB. Max. memory is 11.5 GB. [2019-11-19 18:57:43,921 INFO L168 Benchmark]: Witness Printer took 119.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. [2019-11-19 18:57:43,925 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 604.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -141.0 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 76.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.11 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 905.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 65.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2540.07 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 84.9 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -133.9 MB). Peak memory consumption was 253.0 MB. Max. memory is 11.5 GB. * Witness Printer took 119.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 148]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L359] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L597] int pumpRunning = 0; [L598] int systemActive = 1; [L849] int waterLevel = 1; [L850] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L582] int retValue_acc ; [L585] retValue_acc = 1 [L586] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L783] int splverifierCounter ; [L784] int tmp ; [L785] int tmp___0 ; [L786] int tmp___1 ; [L787] int tmp___2 ; [L790] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L792] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L794] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L800] tmp = __VERIFIER_nondet_int() [L802] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L867] COND TRUE waterLevel < 2 [L868] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L810] tmp___0 = __VERIFIER_nondet_int() [L812] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L820] tmp___2 = __VERIFIER_nondet_int() [L822] COND FALSE !(\read(tmp___2)) [L826] tmp___1 = __VERIFIER_nondet_int() [L828] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L770] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L777] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L604] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L611] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L157] int tmp ; [L158] int tmp___0 ; [L159] int tmp___1 ; [L888] int retValue_acc ; [L891] retValue_acc = methaneLevelCritical [L892] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L163] tmp = isMethaneLevelCritical() [L165] COND FALSE !(\read(tmp)) [L920] int retValue_acc ; [L923] retValue_acc = waterLevel [L924] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L169] tmp___0 = getWaterLevel() [L171] COND TRUE tmp___0 == 2 [L703] int retValue_acc ; [L706] retValue_acc = pumpRunning [L707] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L173] tmp___1 = isPumpRunning() [L175] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L148] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 95 locations, 3 error locations. Result: UNSAFE, OverallTime: 2.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 393 SDtfs, 579 SDslu, 515 SDs, 0 SdLazy, 70 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 262 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 5373 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...