/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 SingleStatement --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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:21:22,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:21:22,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:21:22,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:21:22,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:21:22,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:21:22,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:21:22,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:21:22,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:21:22,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:21:22,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:21:22,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:21:22,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:21:22,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:21:22,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:21:22,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:21:22,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:21:22,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:21:22,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:21:22,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:21:22,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:21:22,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:21:22,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:21:22,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:21:22,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:21:22,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:21:22,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:21:22,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:21:22,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:21:22,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:21:22,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:21:22,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:21:22,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:21:22,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:21:22,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:21:22,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:21:22,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:21:22,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:21:22,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:21:22,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:21:22,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:21:22,998 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 [2020-09-24 21:21:23,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:21:23,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:21:23,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:21:23,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:21:23,040 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:21:23,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:21:23,040 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:21:23,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:21:23,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:21:23,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:21:23,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:21:23,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:21:23,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:21:23,045 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:21:23,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:21:23,045 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:21:23,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:21:23,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:21:23,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:21:23,047 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:21:23,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:21:23,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:21:23,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:21:23,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:21:23,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:21:23,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:21:23,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:21:23,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:21:23,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:21:23,050 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 -> SingleStatement 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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:21:23,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:21:23,528 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:21:23,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:21:23,534 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:21:23,535 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:21:23,536 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product23.cil.c [2020-09-24 21:21:23,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13fe5dca3/fae6c1e4f566468c8d6190f0cd1d9e99/FLAG0953b7159 [2020-09-24 21:21:24,227 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:21:24,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product23.cil.c [2020-09-24 21:21:24,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13fe5dca3/fae6c1e4f566468c8d6190f0cd1d9e99/FLAG0953b7159 [2020-09-24 21:21:24,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13fe5dca3/fae6c1e4f566468c8d6190f0cd1d9e99 [2020-09-24 21:21:24,511 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:21:24,518 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:21:24,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:21:24,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:21:24,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:21:24,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:21:24" (1/1) ... [2020-09-24 21:21:24,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:24, skipping insertion in model container [2020-09-24 21:21:24,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:21:24" (1/1) ... [2020-09-24 21:21:24,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:21:24,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:21:24,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:21:24,983 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:21:25,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:21:25,208 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:21:25,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:25 WrapperNode [2020-09-24 21:21:25,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:21:25,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:21:25,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:21:25,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:21:25,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:25" (1/1) ... [2020-09-24 21:21:25,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:25" (1/1) ... [2020-09-24 21:21:25,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:25" (1/1) ... [2020-09-24 21:21:25,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:25" (1/1) ... [2020-09-24 21:21:25,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:25" (1/1) ... [2020-09-24 21:21:25,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:25" (1/1) ... [2020-09-24 21:21:25,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:25" (1/1) ... [2020-09-24 21:21:25,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:21:25,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:21:25,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:21:25,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:21:25,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:25" (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 [2020-09-24 21:21:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:21:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:21:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 21:21:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 21:21:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 21:21:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 21:21:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 21:21:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 21:21:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 21:21:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 21:21:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 21:21:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 21:21:25,420 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 21:21:25,420 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 21:21:25,420 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 21:21:25,420 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 21:21:25,420 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 21:21:25,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 21:21:25,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 21:21:25,421 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 21:21:25,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 21:21:25,422 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 21:21:25,422 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 21:21:25,422 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 21:21:25,422 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 21:21:25,422 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 21:21:25,422 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 21:21:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:21:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 21:21:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 21:21:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 21:21:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 21:21:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 21:21:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 21:21:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 21:21:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 21:21:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 21:21:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 21:21:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 21:21:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:21:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:21:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 21:21:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 21:21:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 21:21:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 21:21:25,425 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 21:21:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 21:21:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 21:21:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 21:21:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:21:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 21:21:25,426 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 21:21:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 21:21:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 21:21:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 21:21:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 21:21:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 21:21:25,427 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 21:21:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 21:21:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 21:21:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 21:21:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-24 21:21:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 21:21:25,428 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 21:21:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 21:21:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 21:21:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 21:21:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 21:21:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 21:21:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 21:21:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 21:21:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:21:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 21:21:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:21:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 21:21:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 21:21:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:21:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 21:21:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:21:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 21:21:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 21:21:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:21:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 21:21:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 21:21:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:21:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 21:21:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 21:21:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 21:21:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 21:21:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:21:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 21:21:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:21:26,751 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:21:26,751 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 21:21:26,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:21:26 BoogieIcfgContainer [2020-09-24 21:21:26,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:21:26,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:21:26,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:21:26,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:21:26,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:21:24" (1/3) ... [2020-09-24 21:21:26,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a35984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:21:26, skipping insertion in model container [2020-09-24 21:21:26,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:21:25" (2/3) ... [2020-09-24 21:21:26,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a35984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:21:26, skipping insertion in model container [2020-09-24 21:21:26,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:21:26" (3/3) ... [2020-09-24 21:21:26,770 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product23.cil.c [2020-09-24 21:21:26,781 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:21:26,792 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:21:26,816 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:21:26,851 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:21:26,852 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:21:26,852 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:21:26,852 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:21:26,852 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:21:26,852 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:21:26,852 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:21:26,853 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:21:26,882 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2020-09-24 21:21:26,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 21:21:26,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:21:26,903 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:21:26,903 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:21:26,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:21:26,912 INFO L82 PathProgramCache]: Analyzing trace with hash -2023786864, now seen corresponding path program 1 times [2020-09-24 21:21:26,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:21:26,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100079375] [2020-09-24 21:21:26,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:21:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:27,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:27,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:29,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:32,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:32,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 21:21:32,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:21:32,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-09-24 21:21:32,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:32,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:21:32,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 21:21:32,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 21:21:32,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 21:21:33,014 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:21:33,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:21:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:33,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:33,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:33,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:21:33,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:33,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-09-24 21:21:33,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:33,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:21:33,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:33,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 21:21:33,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:21:33,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:21:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:33,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:33,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:33,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:21:33,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:33,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:21:33,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:21:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:21:33,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:33,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:21:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:33,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:33,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:33,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:21:33,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:33,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:21:33,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:21:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:21:33,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:33,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:21:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:33,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:33,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:33,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:21:33,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:33,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:21:33,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:21:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:21:33,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:33,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:21:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:33,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:33,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:33,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:21:33,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:33,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:21:33,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:33,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:21:33,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:33,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:21:33,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:33,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 21:21:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:33,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:33,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:33,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:21:33,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:33,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:21:33,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:21:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:33,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:21:33,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:21:33,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 21:21:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:33,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:33,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:33,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:21:33,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:33,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:21:33,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:33,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:21:33,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:33,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:21:33,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:33,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 21:21:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:33,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:33,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:33,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:21:33,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:33,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:21:33,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:33,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:21:33,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:21:33,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:21:33,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:21:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:21:33,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100079375] [2020-09-24 21:21:33,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:21:33,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:21:33,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624333038] [2020-09-24 21:21:33,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:21:33,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:21:33,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:21:33,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:21:33,754 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 8 states. [2020-09-24 21:21:34,358 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:21:36,409 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:21:36,770 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:21:37,167 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:21:37,620 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:21:37,952 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 21:21:38,266 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:21:38,588 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 21:21:39,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:21:39,966 INFO L93 Difference]: Finished difference Result 655 states and 810 transitions. [2020-09-24 21:21:39,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:21:39,970 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-09-24 21:21:39,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:21:39,992 INFO L225 Difference]: With dead ends: 655 [2020-09-24 21:21:39,992 INFO L226 Difference]: Without dead ends: 454 [2020-09-24 21:21:39,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:21:40,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-09-24 21:21:40,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 406. [2020-09-24 21:21:40,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-09-24 21:21:40,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 465 transitions. [2020-09-24 21:21:40,158 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 465 transitions. Word has length 153 [2020-09-24 21:21:40,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:21:40,161 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 465 transitions. [2020-09-24 21:21:40,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:21:40,161 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 465 transitions. [2020-09-24 21:21:40,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-24 21:21:40,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:21:40,178 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, 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, 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] [2020-09-24 21:21:40,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:21:40,178 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:21:40,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:21:40,179 INFO L82 PathProgramCache]: Analyzing trace with hash 506790598, now seen corresponding path program 1 times [2020-09-24 21:21:40,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:21:40,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415352172] [2020-09-24 21:21:40,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:21:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:40,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:41,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:41,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 21:21:41,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:41,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1270 [2020-09-24 21:21:41,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:41,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:21:41,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 21:21:41,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 21:21:41,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:21:41,810 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:21:41,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:21:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:41,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:42,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:42,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:21:42,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:42,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-24 21:21:42,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:42,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:21:42,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:42,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 21:21:42,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:21:42,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:21:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:42,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:42,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:42,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:21:42,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:42,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:21:42,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:42,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:21:42,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:42,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:21:42,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:42,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:21:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:42,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:42,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:42,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:21:42,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:42,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:21:42,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:42,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:21:42,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:42,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:21:42,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:42,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:21:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:42,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:42,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:42,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:21:42,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:42,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:21:42,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:42,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:21:42,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:42,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:21:42,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:42,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:21:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:42,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:42,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:42,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:21:42,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:42,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:21:42,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:42,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:21:42,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:42,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:21:42,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:42,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 21:21:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:42,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:42,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:42,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:21:42,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:42,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:21:42,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:21:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:42,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:21:42,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:42,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 21:21:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:42,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:42,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:42,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:21:42,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:42,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:21:42,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:42,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:21:42,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:21:42,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:21:42,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:42,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-09-24 21:21:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:42,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:42,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:42,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:21:42,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:42,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:21:42,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:42,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:21:42,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:21:42,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:21:42,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:42,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-24 21:21:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:42,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:42,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:42,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:21:42,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:42,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:21:42,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:42,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:21:42,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:21:42,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:21:42,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:42,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:21:42,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415352172] [2020-09-24 21:21:42,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:21:42,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:21:42,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087156781] [2020-09-24 21:21:42,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:21:42,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:21:42,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:21:42,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:21:42,279 INFO L87 Difference]: Start difference. First operand 406 states and 465 transitions. Second operand 6 states. [2020-09-24 21:21:42,834 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:21:43,768 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 21:21:46,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:21:46,727 INFO L93 Difference]: Finished difference Result 1264 states and 1585 transitions. [2020-09-24 21:21:46,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:21:46,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2020-09-24 21:21:46,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:21:46,740 INFO L225 Difference]: With dead ends: 1264 [2020-09-24 21:21:46,741 INFO L226 Difference]: Without dead ends: 968 [2020-09-24 21:21:46,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:21:46,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-09-24 21:21:46,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 859. [2020-09-24 21:21:46,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 859 states. [2020-09-24 21:21:46,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1021 transitions. [2020-09-24 21:21:46,934 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1021 transitions. Word has length 168 [2020-09-24 21:21:46,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:21:46,935 INFO L479 AbstractCegarLoop]: Abstraction has 859 states and 1021 transitions. [2020-09-24 21:21:46,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:21:46,935 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1021 transitions. [2020-09-24 21:21:46,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 21:21:46,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:21:46,941 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, 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, 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] [2020-09-24 21:21:46,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:21:46,941 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:21:46,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:21:46,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1441534341, now seen corresponding path program 1 times [2020-09-24 21:21:46,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:21:46,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146416983] [2020-09-24 21:21:46,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:21:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:47,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:47,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:47,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:47,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:52,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:52,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-24 21:21:52,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:21:52,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-24 21:21:52,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:52,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:21:52,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 21:21:52,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 21:21:52,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:52,306 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 21:21:52,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:21:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:52,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:52,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:52,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:21:52,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:52,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-24 21:21:52,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:52,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:21:52,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:52,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 21:21:52,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:52,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:21:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:52,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:52,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:52,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:21:52,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:52,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:21:52,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:52,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:21:52,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:52,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:21:52,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:21:52,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 21:21:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:52,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:52,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:52,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:21:52,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:52,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:21:52,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:52,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:21:52,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:52,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:21:52,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:21:52,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 21:21:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:52,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:52,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:52,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:21:52,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:52,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:21:52,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:52,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:21:52,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:52,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:21:52,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:52,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 21:21:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:52,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:52,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:52,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:21:52,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:52,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:21:52,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:52,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:21:52,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:52,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:21:52,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:52,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 21:21:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:52,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:52,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:52,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:21:52,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:52,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:21:52,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:21:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 21:21:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:21:52,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:52,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-24 21:21:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:52,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:52,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:52,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:21:52,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:52,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:21:52,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:52,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:21:52,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:21:52,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:21:52,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:52,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:21:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:52,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:52,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:52,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:21:52,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:52,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:21:52,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:52,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:21:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:21:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:21:52,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:21:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:52,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:52,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:52,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:21:52,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:52,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:21:52,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:21:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:21:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:21:52,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:52,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-24 21:21:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:52,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:52,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:52,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:21:52,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:52,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:21:52,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:52,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:21:52,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:21:52,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:21:52,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:52,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 21:21:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:52,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:52,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:52,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:21:52,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:52,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:21:52,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:52,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:21:52,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:21:52,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:21:52,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 35 [2020-09-24 21:21:52,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 21:21:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:21:52,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:21:52,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:21:52,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:21:52,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:21:52,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:21:52,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:21:52,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:21:52,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 21:21:52,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:21:52,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:21:52,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:21:52,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146416983] [2020-09-24 21:21:52,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:21:52,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:21:52,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147371713] [2020-09-24 21:21:52,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:21:52,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:21:52,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:21:52,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:21:52,811 INFO L87 Difference]: Start difference. First operand 859 states and 1021 transitions. Second operand 6 states. [2020-09-24 21:21:53,470 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 21:21:54,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:21:54,510 INFO L93 Difference]: Finished difference Result 1402 states and 1732 transitions. [2020-09-24 21:21:54,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:21:54,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-09-24 21:21:54,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:21:54,520 INFO L225 Difference]: With dead ends: 1402 [2020-09-24 21:21:54,520 INFO L226 Difference]: Without dead ends: 622 [2020-09-24 21:21:54,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:21:54,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2020-09-24 21:21:54,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 592. [2020-09-24 21:21:54,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-09-24 21:21:54,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 654 transitions. [2020-09-24 21:21:54,659 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 654 transitions. Word has length 172 [2020-09-24 21:21:54,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:21:54,662 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 654 transitions. [2020-09-24 21:21:54,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:21:54,662 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 654 transitions. [2020-09-24 21:21:54,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 21:21:54,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:21:54,669 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, 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, 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] [2020-09-24 21:21:54,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:21:54,670 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:21:54,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:21:54,670 INFO L82 PathProgramCache]: Analyzing trace with hash 95529110, now seen corresponding path program 1 times [2020-09-24 21:21:54,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:21:54,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145883158] [2020-09-24 21:21:54,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:21:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:21:54,749 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:21:54,749 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:21:54,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:21:54,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:21:54 BoogieIcfgContainer [2020-09-24 21:21:54,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:21:54,805 INFO L168 Benchmark]: Toolchain (without parser) took 30291.55 ms. Allocated memory was 139.5 MB in the beginning and 595.1 MB in the end (delta: 455.6 MB). Free memory was 102.0 MB in the beginning and 176.3 MB in the end (delta: -74.4 MB). Peak memory consumption was 381.2 MB. Max. memory is 7.1 GB. [2020-09-24 21:21:54,806 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 21:21:54,808 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.84 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 173.2 MB in the end (delta: -71.9 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2020-09-24 21:21:54,810 INFO L168 Benchmark]: Boogie Preprocessor took 107.57 ms. Allocated memory is still 203.4 MB. Free memory was 173.2 MB in the beginning and 169.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-24 21:21:54,816 INFO L168 Benchmark]: RCFGBuilder took 1442.38 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 169.1 MB in the beginning and 179.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2020-09-24 21:21:54,817 INFO L168 Benchmark]: TraceAbstraction took 28041.94 ms. Allocated memory was 236.5 MB in the beginning and 595.1 MB in the end (delta: 358.6 MB). Free memory was 177.7 MB in the beginning and 176.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 359.9 MB. Max. memory is 7.1 GB. [2020-09-24 21:21:54,829 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 139.5 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 689.84 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 173.2 MB in the end (delta: -71.9 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.57 ms. Allocated memory is still 203.4 MB. Free memory was 173.2 MB in the beginning and 169.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1442.38 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 169.1 MB in the beginning and 179.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28041.94 ms. Allocated memory was 236.5 MB in the beginning and 595.1 MB in the end (delta: 358.6 MB). Free memory was 177.7 MB in the beginning and 176.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 359.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 541]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L177] int pumpRunning = 0; [L178] int systemActive = 1; [L438] int cleanupTimeShifts = 4; [L715] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L514] int retValue_acc ; [L515] int tmp ; [L519] FCALL select_helpers() [L520] FCALL select_features() [L521] CALL, EXPR valid_product() [L938] int retValue_acc ; [L941] retValue_acc = 1 [L942] return (retValue_acc); [L521] RET, EXPR valid_product() [L521] tmp = valid_product() [L523] COND TRUE \read(tmp) [L525] FCALL setup() [L526] CALL runTest() [L505] CALL test() [L372] int splverifierCounter ; [L373] int tmp ; [L374] int tmp___0 ; [L375] int tmp___1 ; [L376] int tmp___2 ; [L379] splverifierCounter = 0 [L381] COND TRUE 1 [L383] COND TRUE splverifierCounter < 4 [L389] tmp = __VERIFIER_nondet_int() [L391] COND TRUE \read(tmp) [L393] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L393] RET waterRise() [L399] tmp___0 = __VERIFIER_nondet_int() [L401] COND FALSE !(\read(tmp___0)) [L409] tmp___2 = __VERIFIER_nondet_int() [L411] COND FALSE !(\read(tmp___2)) [L415] tmp___1 = __VERIFIER_nondet_int() [L417] COND TRUE \read(tmp___1) [L419] CALL stopSystem() [L358] COND FALSE !(\read(pumpRunning)) [L365] systemActive = 0 [L419] RET stopSystem() [L426] CALL timeShift() [L184] COND FALSE !(\read(pumpRunning)) [L191] COND FALSE !(\read(systemActive)) [L199] CALL __utac_acc__Specification3_spec__1() [L139] int tmp ; [L140] int tmp___0 ; [L141] int tmp___1 ; [L145] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L145] RET, EXPR isMethaneLevelCritical() [L145] tmp = isMethaneLevelCritical() [L147] COND FALSE !(\read(tmp)) [L151] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L151] RET, EXPR getWaterLevel() [L151] tmp___0 = getWaterLevel() [L153] COND TRUE tmp___0 == 2 [L155] CALL, EXPR isPumpRunning() [L291] int retValue_acc ; [L294] retValue_acc = pumpRunning [L295] return (retValue_acc); [L155] RET, EXPR isPumpRunning() [L155] tmp___1 = isPumpRunning() [L157] COND FALSE !(\read(tmp___1)) [L161] CALL __automaton_fail() [L541] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 627 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 12.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 743 SDtfs, 1524 SDslu, 1020 SDs, 0 SdLazy, 2255 SolverSat, 519 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=859occurred 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: 0.4s AutomataMinimizationTime, 3 MinimizatonAttempts, 187 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 14.1s InterpolantComputationTime, 670 NumberOfCodeBlocks, 670 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 490 ConstructedInterpolants, 0 QuantifiedInterpolants, 216772 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...