/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product04.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 01:42:02,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 01:42:02,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 01:42:02,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 01:42:02,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 01:42:02,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 01:42:02,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 01:42:02,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 01:42:02,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 01:42:02,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 01:42:02,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 01:42:02,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 01:42:02,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 01:42:02,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 01:42:02,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 01:42:02,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 01:42:02,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 01:42:02,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 01:42:02,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 01:42:02,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 01:42:02,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 01:42:02,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 01:42:02,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 01:42:02,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 01:42:02,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 01:42:02,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 01:42:02,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 01:42:02,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 01:42:02,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 01:42:02,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 01:42:02,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 01:42:02,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 01:42:02,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 01:42:02,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 01:42:02,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 01:42:02,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 01:42:02,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 01:42:02,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 01:42:02,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 01:42:02,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 01:42:02,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 01:42:02,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 01:42:02,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 01:42:02,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 01:42:02,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 01:42:02,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 01:42:02,304 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 01:42:02,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 01:42:02,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 01:42:02,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 01:42:02,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 01:42:02,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 01:42:02,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 01:42:02,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 01:42:02,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 01:42:02,308 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 01:42:02,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 01:42:02,308 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 01:42:02,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 01:42:02,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 01:42:02,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 01:42:02,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 01:42:02,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 01:42:02,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 01:42:02,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 01:42:02,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 01:42:02,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 01:42:02,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 01:42:02,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 01:42:02,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 01:42:02,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 01:42:02,311 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 01:42:02,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 01:42:02,622 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 01:42:02,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 01:42:02,631 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 01:42:02,631 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 01:42:02,632 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product04.cil.c [2020-10-15 01:42:02,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0283dd17/a7ac8dd6e91c484195cc6b0a2b49970d/FLAGe3e16a805 [2020-10-15 01:42:03,209 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 01:42:03,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product04.cil.c [2020-10-15 01:42:03,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0283dd17/a7ac8dd6e91c484195cc6b0a2b49970d/FLAGe3e16a805 [2020-10-15 01:42:03,507 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0283dd17/a7ac8dd6e91c484195cc6b0a2b49970d [2020-10-15 01:42:03,515 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 01:42:03,517 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 01:42:03,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 01:42:03,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 01:42:03,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 01:42:03,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:42:03" (1/1) ... [2020-10-15 01:42:03,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:03, skipping insertion in model container [2020-10-15 01:42:03,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:42:03" (1/1) ... [2020-10-15 01:42:03,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 01:42:03,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 01:42:03,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 01:42:04,002 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 01:42:04,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 01:42:04,105 INFO L208 MainTranslator]: Completed translation [2020-10-15 01:42:04,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:04 WrapperNode [2020-10-15 01:42:04,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 01:42:04,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 01:42:04,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 01:42:04,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 01:42:04,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:04" (1/1) ... [2020-10-15 01:42:04,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:04" (1/1) ... [2020-10-15 01:42:04,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:04" (1/1) ... [2020-10-15 01:42:04,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:04" (1/1) ... [2020-10-15 01:42:04,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:04" (1/1) ... [2020-10-15 01:42:04,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:04" (1/1) ... [2020-10-15 01:42:04,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:04" (1/1) ... [2020-10-15 01:42:04,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 01:42:04,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 01:42:04,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 01:42:04,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 01:42:04,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-15 01:42:04,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 01:42:04,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 01:42:04,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-15 01:42:04,314 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-15 01:42:04,314 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-15 01:42:04,314 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-15 01:42:04,314 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-15 01:42:04,316 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-15 01:42:04,316 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-15 01:42:04,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-15 01:42:04,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-15 01:42:04,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-15 01:42:04,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-15 01:42:04,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-15 01:42:04,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-15 01:42:04,318 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-15 01:42:04,318 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-15 01:42:04,318 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-15 01:42:04,318 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-15 01:42:04,318 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-15 01:42:04,318 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-15 01:42:04,319 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-15 01:42:04,319 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-15 01:42:04,319 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 01:42:04,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-15 01:42:04,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-10-15 01:42:04,320 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-15 01:42:04,320 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-15 01:42:04,321 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-15 01:42:04,321 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-15 01:42:04,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-15 01:42:04,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-15 01:42:04,321 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-15 01:42:04,321 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-15 01:42:04,321 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-15 01:42:04,321 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-15 01:42:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 01:42:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 01:42:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-15 01:42:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-15 01:42:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-15 01:42:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-15 01:42:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-15 01:42:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-15 01:42:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-15 01:42:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 01:42:04,324 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-15 01:42:04,324 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-15 01:42:04,324 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-15 01:42:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-15 01:42:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-15 01:42:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-15 01:42:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 01:42:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-15 01:42:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-15 01:42:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 01:42:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-15 01:42:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-15 01:42:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 01:42:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-15 01:42:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-15 01:42:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-15 01:42:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-15 01:42:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-15 01:42:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-15 01:42:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-15 01:42:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-15 01:42:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-15 01:42:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-15 01:42:04,329 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-15 01:42:04,329 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-15 01:42:04,330 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-15 01:42:04,331 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-15 01:42:04,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 01:42:04,331 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-15 01:42:04,331 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-15 01:42:04,331 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-10-15 01:42:04,331 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-15 01:42:04,331 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-15 01:42:04,332 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-15 01:42:04,332 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-15 01:42:04,332 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-15 01:42:04,332 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-15 01:42:04,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 01:42:04,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-15 01:42:04,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 01:42:05,452 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 01:42:05,452 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-15 01:42:05,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:42:05 BoogieIcfgContainer [2020-10-15 01:42:05,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 01:42:05,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 01:42:05,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 01:42:05,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 01:42:05,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:42:03" (1/3) ... [2020-10-15 01:42:05,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2899ab74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:42:05, skipping insertion in model container [2020-10-15 01:42:05,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:04" (2/3) ... [2020-10-15 01:42:05,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2899ab74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:42:05, skipping insertion in model container [2020-10-15 01:42:05,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:42:05" (3/3) ... [2020-10-15 01:42:05,484 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product04.cil.c [2020-10-15 01:42:05,507 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 01:42:05,515 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 01:42:05,528 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 01:42:05,551 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 01:42:05,551 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 01:42:05,551 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 01:42:05,551 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 01:42:05,552 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 01:42:05,552 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 01:42:05,552 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 01:42:05,552 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 01:42:05,575 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2020-10-15 01:42:05,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 01:42:05,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:42:05,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:42:05,587 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:42:05,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:42:05,593 INFO L82 PathProgramCache]: Analyzing trace with hash -403347124, now seen corresponding path program 1 times [2020-10-15 01:42:05,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:42:05,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909860409] [2020-10-15 01:42:05,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:42:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:06,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:06,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:06,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:08,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:08,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 01:42:08,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 01:42:08,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2425 [2020-10-15 01:42:08,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:08,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 01:42:08,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:08,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 01:42:08,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-15 01:42:09,045 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 01:42:09,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:42:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:09,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:09,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:09,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:09,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:09,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-15 01:42:09,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:09,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:09,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:09,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:09,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 01:42:09,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-15 01:42:09,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 01:42:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:09,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:09,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:09,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:09,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:09,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 01:42:09,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:09,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:09,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:09,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:09,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:09,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 01:42:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:09,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:09,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:09,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:09,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:09,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 01:42:09,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:09,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:09,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:09,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:09,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:09,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:09,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 01:42:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:09,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:09,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:09,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:09,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:09,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 01:42:09,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:09,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:42:09,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:09,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 01:42:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:09,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:09,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:09,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:09,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:09,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 01:42:09,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:09,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:09,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:09,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:09,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:09,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:09,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 01:42:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:09,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:09,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:09,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:09,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:09,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 01:42:09,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:09,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:09,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:09,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:09,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:42:09,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:42:09,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 01:42:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:09,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:09,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:09,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:09,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:09,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 01:42:09,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:09,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:09,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 01:42:09,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:09,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:42:09,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:09,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 01:42:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:09,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:09,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:09,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:09,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:09,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:09,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:09,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:09,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:42:09,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:09,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:42:09,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:42:09,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909860409] [2020-10-15 01:42:09,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:42:09,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 01:42:09,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707519037] [2020-10-15 01:42:09,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 01:42:09,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:42:09,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 01:42:09,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 01:42:09,390 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 8 states. [2020-10-15 01:42:09,882 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:42:10,721 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 01:42:11,258 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 01:42:11,673 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-15 01:42:11,964 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-15 01:42:12,228 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-15 01:42:12,543 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 01:42:12,831 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 01:42:13,104 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:42:13,501 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-15 01:42:14,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:42:14,482 INFO L93 Difference]: Finished difference Result 413 states and 571 transitions. [2020-10-15 01:42:14,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 01:42:14,486 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-15 01:42:14,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:42:14,503 INFO L225 Difference]: With dead ends: 413 [2020-10-15 01:42:14,503 INFO L226 Difference]: Without dead ends: 280 [2020-10-15 01:42:14,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-10-15 01:42:14,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-15 01:42:14,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 242. [2020-10-15 01:42:14,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-15 01:42:14,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 300 transitions. [2020-10-15 01:42:14,659 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 300 transitions. Word has length 52 [2020-10-15 01:42:14,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:42:14,660 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 300 transitions. [2020-10-15 01:42:14,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 01:42:14,660 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 300 transitions. [2020-10-15 01:42:14,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 01:42:14,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:42:14,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-15 01:42:14,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 01:42:14,678 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:42:14,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:42:14,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1469553567, now seen corresponding path program 1 times [2020-10-15 01:42:14,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:42:14,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789850289] [2020-10-15 01:42:14,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:42:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:14,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:15,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:15,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 01:42:15,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:15,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 765 [2020-10-15 01:42:15,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:15,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 01:42:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:15,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 01:42:15,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:42:15,728 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 01:42:15,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:42:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:15,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:15,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:15,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:15,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:15,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-15 01:42:15,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:15,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:15,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 01:42:15,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:15,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 01:42:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:15,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:15,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:15,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:15,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:15,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:15,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:15,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:15,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:15,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:15,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:15,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:15,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 01:42:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:15,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:15,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:15,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:15,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:15,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:15,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:15,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:15,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:15,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 01:42:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:15,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:15,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:15,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:15,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:15,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:42:15,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:15,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:42:15,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:15,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 01:42:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:15,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:15,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:15,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:15,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:15,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:15,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:15,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:15,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:15,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:15,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 01:42:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:15,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:15,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:15,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:15,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:15,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 01:42:15,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:15,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:15,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:15,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:15,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:42:15,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:15,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-15 01:42:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:15,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:15,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:15,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:15,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:15,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:15,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:15,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:15,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:42:15,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:15,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:42:15,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:15,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 01:42:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:15,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:15,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:15,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:15,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:15,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:15,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:15,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:15,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:42:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:42:15,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:15,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 01:42:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:15,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:15,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:15,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:15,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:15,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:15,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:15,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:42:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:42:15,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:15,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:42:15,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789850289] [2020-10-15 01:42:15,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:42:15,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 01:42:15,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880138245] [2020-10-15 01:42:15,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 01:42:15,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:42:15,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 01:42:15,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 01:42:15,899 INFO L87 Difference]: Start difference. First operand 242 states and 300 transitions. Second operand 5 states. [2020-10-15 01:42:16,225 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:42:17,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:42:17,692 INFO L93 Difference]: Finished difference Result 717 states and 943 transitions. [2020-10-15 01:42:17,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 01:42:17,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-15 01:42:17,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:42:17,711 INFO L225 Difference]: With dead ends: 717 [2020-10-15 01:42:17,711 INFO L226 Difference]: Without dead ends: 499 [2020-10-15 01:42:17,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 01:42:17,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-10-15 01:42:17,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 418. [2020-10-15 01:42:17,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-15 01:42:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 527 transitions. [2020-10-15 01:42:17,828 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 527 transitions. Word has length 62 [2020-10-15 01:42:17,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:42:17,829 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 527 transitions. [2020-10-15 01:42:17,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 01:42:17,829 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 527 transitions. [2020-10-15 01:42:17,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 01:42:17,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:42:17,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:42:17,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 01:42:17,833 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:42:17,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:42:17,833 INFO L82 PathProgramCache]: Analyzing trace with hash -2033281573, now seen corresponding path program 1 times [2020-10-15 01:42:17,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:42:17,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853480418] [2020-10-15 01:42:17,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:42:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:17,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:18,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:20,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:22,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:22,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 01:42:22,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 01:42:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 01:42:22,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:22,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 01:42:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 01:42:22,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:23,134 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 01:42:23,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:42:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:23,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:23,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:23,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:23,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:23,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-15 01:42:23,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:23,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:23,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:23,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:23,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 01:42:23,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:23,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 01:42:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:23,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:23,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:23,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:23,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:23,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:23,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:23,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:23,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:23,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:23,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:23,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 01:42:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:23,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:23,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:23,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:23,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:23,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:23,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:23,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:23,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:23,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:23,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:23,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:23,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 01:42:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:23,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:23,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:23,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:23,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:23,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:42:23,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:23,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:23,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:23,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:23,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:42:23,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:23,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 01:42:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:23,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:23,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:23,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:23,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:23,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:23,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:23,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:23,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:23,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:23,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:23,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:23,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 01:42:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:23,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:23,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:23,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:23,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:23,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:42:23,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:23,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:23,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:23,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:23,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:42:23,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:23,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-15 01:42:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:23,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:23,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:23,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:23,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:23,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:23,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:42:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:42:23,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:23,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 01:42:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:23,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:23,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:23,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:23,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:23,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 01:42:23,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:23,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:23,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:42:23,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-15 01:42:23,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:42:23,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:23,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-15 01:42:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:23,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:23,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:23,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:23,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:23,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:23,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:23,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:42:23,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:23,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:42:23,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:23,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-15 01:42:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:23,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:23,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:23,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:23,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:23,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:23,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:23,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:42:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:23,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:42:23,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:42:23,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-15 01:42:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:23,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:23,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:23,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:23,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:23,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:23,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:23,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:23,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:42:23,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:23,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:42:23,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:42:23,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853480418] [2020-10-15 01:42:23,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:42:23,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 01:42:23,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287201367] [2020-10-15 01:42:23,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 01:42:23,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:42:23,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 01:42:23,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 01:42:23,323 INFO L87 Difference]: Start difference. First operand 418 states and 527 transitions. Second operand 5 states. [2020-10-15 01:42:23,724 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:42:24,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:42:24,359 INFO L93 Difference]: Finished difference Result 666 states and 858 transitions. [2020-10-15 01:42:24,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 01:42:24,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-15 01:42:24,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:42:24,368 INFO L225 Difference]: With dead ends: 666 [2020-10-15 01:42:24,369 INFO L226 Difference]: Without dead ends: 253 [2020-10-15 01:42:24,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 01:42:24,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-15 01:42:24,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 239. [2020-10-15 01:42:24,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-15 01:42:24,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 278 transitions. [2020-10-15 01:42:24,469 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 278 transitions. Word has length 69 [2020-10-15 01:42:24,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:42:24,472 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 278 transitions. [2020-10-15 01:42:24,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 01:42:24,472 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 278 transitions. [2020-10-15 01:42:24,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 01:42:24,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:42:24,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 01:42:24,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 01:42:24,475 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:42:24,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:42:24,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1832330753, now seen corresponding path program 1 times [2020-10-15 01:42:24,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:42:24,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962715645] [2020-10-15 01:42:24,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:42:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 01:42:24,529 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-15 01:42:24,530 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 01:42:24,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 01:42:24,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:42:24 BoogieIcfgContainer [2020-10-15 01:42:24,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 01:42:24,579 INFO L168 Benchmark]: Toolchain (without parser) took 21061.42 ms. Allocated memory was 145.2 MB in the beginning and 586.2 MB in the end (delta: 440.9 MB). Free memory was 100.2 MB in the beginning and 469.3 MB in the end (delta: -369.1 MB). Peak memory consumption was 71.8 MB. Max. memory is 7.1 GB. [2020-10-15 01:42:24,580 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.3 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-10-15 01:42:24,582 INFO L168 Benchmark]: CACSL2BoogieTranslator took 588.15 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 100.2 MB in the beginning and 171.3 MB in the end (delta: -71.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-10-15 01:42:24,584 INFO L168 Benchmark]: Boogie Preprocessor took 124.07 ms. Allocated memory is still 202.4 MB. Free memory was 171.3 MB in the beginning and 165.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2020-10-15 01:42:24,590 INFO L168 Benchmark]: RCFGBuilder took 1233.36 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 165.9 MB in the beginning and 199.7 MB in the end (delta: -33.8 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. [2020-10-15 01:42:24,591 INFO L168 Benchmark]: TraceAbstraction took 19110.98 ms. Allocated memory was 234.4 MB in the beginning and 586.2 MB in the end (delta: 351.8 MB). Free memory was 199.7 MB in the beginning and 469.3 MB in the end (delta: -269.6 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2020-10-15 01:42:24,604 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.3 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 588.15 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 100.2 MB in the beginning and 171.3 MB in the end (delta: -71.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.07 ms. Allocated memory is still 202.4 MB. Free memory was 171.3 MB in the beginning and 165.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1233.36 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 165.9 MB in the beginning and 199.7 MB in the end (delta: -33.8 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19110.98 ms. Allocated memory was 234.4 MB in the beginning and 586.2 MB in the end (delta: 351.8 MB). Free memory was 199.7 MB in the beginning and 469.3 MB in the end (delta: -269.6 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 633]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L46] int waterLevel = 1; [L47] int methaneLevelCritical = 0; [L295] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L530] int cleanupTimeShifts = 4; [L677] int pumpRunning = 0; [L678] int systemActive = 1; [L606] int retValue_acc ; [L607] int tmp ; [L611] FCALL select_helpers() [L612] FCALL select_features() [L613] CALL, EXPR valid_product() [L521] int retValue_acc ; [L524] retValue_acc = 1 [L525] return (retValue_acc); [L613] RET, EXPR valid_product() [L613] tmp = valid_product() [L615] COND TRUE \read(tmp) [L617] FCALL setup() [L618] CALL runTest() [L600] CALL test() [L808] int splverifierCounter ; [L809] int tmp ; [L810] int tmp___0 ; [L811] int tmp___1 ; [L812] int tmp___2 ; [L815] splverifierCounter = 0 [L817] COND TRUE 1 [L819] COND TRUE splverifierCounter < 4 [L825] tmp = __VERIFIER_nondet_int() [L827] COND TRUE \read(tmp) [L829] CALL waterRise() [L64] COND TRUE waterLevel < 2 [L65] waterLevel = waterLevel + 1 [L829] RET waterRise() [L835] tmp___0 = __VERIFIER_nondet_int() [L837] COND FALSE !(\read(tmp___0)) [L845] tmp___2 = __VERIFIER_nondet_int() [L847] COND FALSE !(\read(tmp___2)) [L853] tmp___1 = __VERIFIER_nondet_int() [L855] COND FALSE !(\read(tmp___1)) [L864] CALL timeShift() [L684] COND FALSE !(\read(pumpRunning)) [L691] COND TRUE \read(systemActive) [L693] FCALL processEnvironment() [L699] CALL __utac_acc__Specification3_spec__1() [L640] int tmp ; [L641] int tmp___0 ; [L642] int tmp___1 ; [L646] CALL, EXPR isMethaneLevelCritical() [L85] int retValue_acc ; [L88] retValue_acc = methaneLevelCritical [L89] return (retValue_acc); [L646] RET, EXPR isMethaneLevelCritical() [L646] tmp = isMethaneLevelCritical() [L648] COND FALSE !(\read(tmp)) [L652] CALL, EXPR getWaterLevel() [L117] int retValue_acc ; [L120] retValue_acc = waterLevel [L121] return (retValue_acc); [L652] RET, EXPR getWaterLevel() [L652] tmp___0 = getWaterLevel() [L654] COND TRUE tmp___0 == 2 [L656] CALL, EXPR isPumpRunning() [L739] int retValue_acc ; [L742] retValue_acc = pumpRunning [L743] return (retValue_acc); [L656] RET, EXPR isPumpRunning() [L656] tmp___1 = isPumpRunning() [L658] COND FALSE !(\read(tmp___1)) [L662] CALL __automaton_fail() [L633] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 291 SDtfs, 617 SDslu, 336 SDs, 0 SdLazy, 1172 SolverSat, 363 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=418occurred in iteration=2, 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, 3 MinimizatonAttempts, 133 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 248 NumberOfCodeBlocks, 248 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 55391 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...