/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/eca-rers2012/Problem02_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:41:03,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:41:03,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:41:03,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:41:03,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:41:03,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:41:03,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:41:03,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:41:03,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:41:03,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:41:03,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:41:03,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:41:03,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:41:03,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:41:03,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:41:03,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:41:03,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:41:03,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:41:03,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:41:03,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:41:03,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:41:03,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:41:03,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:41:03,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:41:03,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:41:03,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:41:03,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:41:03,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:41:03,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:41:03,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:41:03,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:41:03,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:41:03,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:41:03,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:41:03,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:41:03,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:41:03,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:41:03,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:41:03,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:41:03,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:41:03,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:41:03,735 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 21:41:03,763 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:41:03,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:41:03,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:41:03,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:41:03,765 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:41:03,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:41:03,765 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:41:03,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:41:03,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:41:03,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:41:03,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:41:03,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:41:03,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:41:03,767 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:41:03,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:41:03,767 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:41:03,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:41:03,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:41:03,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:41:03,768 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:41:03,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:41:03,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:41:03,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:41:03,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:41:03,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:41:03,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:41:03,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:41:03,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:41:03,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:41:03,770 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 21:41:04,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:41:04,219 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:41:04,223 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:41:04,225 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:41:04,226 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:41:04,227 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-09-24 21:41:04,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b3b0279f/b8ebaffc826040679f3ce8f52ab167f1/FLAG98fb7fc10 [2020-09-24 21:41:04,952 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:41:04,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-09-24 21:41:04,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b3b0279f/b8ebaffc826040679f3ce8f52ab167f1/FLAG98fb7fc10 [2020-09-24 21:41:05,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b3b0279f/b8ebaffc826040679f3ce8f52ab167f1 [2020-09-24 21:41:05,222 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:41:05,228 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:41:05,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:41:05,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:41:05,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:41:05,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:41:05" (1/1) ... [2020-09-24 21:41:05,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:05, skipping insertion in model container [2020-09-24 21:41:05,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:41:05" (1/1) ... [2020-09-24 21:41:05,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:41:05,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:41:05,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:41:05,804 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:41:05,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:41:06,010 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:41:06,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:06 WrapperNode [2020-09-24 21:41:06,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:41:06,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:41:06,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:41:06,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:41:06,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:06" (1/1) ... [2020-09-24 21:41:06,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:06" (1/1) ... [2020-09-24 21:41:06,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:06" (1/1) ... [2020-09-24 21:41:06,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:06" (1/1) ... [2020-09-24 21:41:06,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:06" (1/1) ... [2020-09-24 21:41:06,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:06" (1/1) ... [2020-09-24 21:41:06,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:06" (1/1) ... [2020-09-24 21:41:06,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:41:06,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:41:06,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:41:06,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:41:06,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:06" (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 21:41:06,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:41:06,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:41:06,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:41:06,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:41:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:41:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:41:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:41:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:41:06,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:41:06,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:41:06,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:41:07,528 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:41:07,528 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:41:07,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:41:07 BoogieIcfgContainer [2020-09-24 21:41:07,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:41:07,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:41:07,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:41:07,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:41:07,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:41:05" (1/3) ... [2020-09-24 21:41:07,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:41:07, skipping insertion in model container [2020-09-24 21:41:07,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:41:06" (2/3) ... [2020-09-24 21:41:07,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:41:07, skipping insertion in model container [2020-09-24 21:41:07,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:41:07" (3/3) ... [2020-09-24 21:41:07,549 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label05.c [2020-09-24 21:41:07,562 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:41:07,573 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:41:07,598 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:41:07,641 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:41:07,642 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:41:07,642 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:41:07,642 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:41:07,642 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:41:07,642 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:41:07,643 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:41:07,643 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:41:07,686 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 21:41:07,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-24 21:41:07,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:41:07,726 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] [2020-09-24 21:41:07,727 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:41:07,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:41:07,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1976766121, now seen corresponding path program 1 times [2020-09-24 21:41:07,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:41:07,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106040551] [2020-09-24 21:41:07,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:41:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:08,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:08,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:08,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:08,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:10,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:10,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:11,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:11,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:11,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:12,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:13,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:13,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-24 21:41:13,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:41:13,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 21:41:13,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:13,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:41:13,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:41:13,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 21:41:13,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:41:13,564 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 30 [2020-09-24 21:41:13,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:41:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:13,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:13,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:13,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:41:13,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:41:13,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 21:41:13,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:41:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:41:13,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:41:13,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:41:14,359 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 21:41:14,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106040551] [2020-09-24 21:41:14,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:41:14,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-24 21:41:14,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538666379] [2020-09-24 21:41:14,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 21:41:14,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:41:14,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 21:41:14,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:41:14,392 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 16 states. [2020-09-24 21:41:14,803 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-09-24 21:41:14,952 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-09-24 21:41:15,087 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-09-24 21:41:15,322 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-09-24 21:41:15,626 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-09-24 21:41:16,188 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-09-24 21:41:16,557 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-24 21:41:17,623 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-09-24 21:41:17,813 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-09-24 21:41:18,117 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-09-24 21:41:18,879 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-09-24 21:41:19,366 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-09-24 21:41:19,561 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-24 21:41:20,556 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-09-24 21:41:20,977 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-24 21:41:23,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:41:23,448 INFO L93 Difference]: Finished difference Result 1869 states and 2661 transitions. [2020-09-24 21:41:23,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 21:41:23,451 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 152 [2020-09-24 21:41:23,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:41:23,501 INFO L225 Difference]: With dead ends: 1869 [2020-09-24 21:41:23,501 INFO L226 Difference]: Without dead ends: 1239 [2020-09-24 21:41:23,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=469, Invalid=1171, Unknown=0, NotChecked=0, Total=1640 [2020-09-24 21:41:23,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2020-09-24 21:41:23,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1076. [2020-09-24 21:41:23,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-09-24 21:41:23,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1293 transitions. [2020-09-24 21:41:23,676 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1293 transitions. Word has length 152 [2020-09-24 21:41:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:41:23,677 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1293 transitions. [2020-09-24 21:41:23,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 21:41:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1293 transitions. [2020-09-24 21:41:23,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-24 21:41:23,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:41:23,685 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:23,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:41:23,686 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:41:23,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:41:23,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1232467595, now seen corresponding path program 1 times [2020-09-24 21:41:23,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:41:23,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545772805] [2020-09-24 21:41:23,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:41:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:23,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:23,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:24,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:24,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:25,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:26,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:27,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:28,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:28,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:28,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:28,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:28,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 21:41:28,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:41:28,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-09-24 21:41:28,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:28,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:41:28,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:41:28,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 21:41:28,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:41:29,357 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-09-24 21:41:29,482 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2020-09-24 21:41:29,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:41:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:29,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:29,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:29,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:41:29,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:41:29,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 21:41:29,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:29,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:41:29,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:41:29,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:41:29,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:41:29,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:41:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:29,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:30,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:30,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:41:30,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:41:30,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 21:41:30,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:30,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:41:30,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:41:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:41:30,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:41:30,285 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:41:30,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545772805] [2020-09-24 21:41:30,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:41:30,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 21:41:30,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158998851] [2020-09-24 21:41:30,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 21:41:30,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:41:30,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 21:41:30,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:41:30,289 INFO L87 Difference]: Start difference. First operand 1076 states and 1293 transitions. Second operand 19 states. [2020-09-24 21:41:31,094 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-24 21:41:31,656 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 97 [2020-09-24 21:41:31,986 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 94 [2020-09-24 21:41:33,441 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-24 21:41:33,763 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 91 [2020-09-24 21:41:35,252 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2020-09-24 21:41:35,653 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2020-09-24 21:41:37,029 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2020-09-24 21:41:37,758 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2020-09-24 21:41:39,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:41:39,633 INFO L93 Difference]: Finished difference Result 4103 states and 5484 transitions. [2020-09-24 21:41:39,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-24 21:41:39,633 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 174 [2020-09-24 21:41:39,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:41:39,664 INFO L225 Difference]: With dead ends: 4103 [2020-09-24 21:41:39,664 INFO L226 Difference]: Without dead ends: 3107 [2020-09-24 21:41:39,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=593, Invalid=1477, Unknown=0, NotChecked=0, Total=2070 [2020-09-24 21:41:39,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2020-09-24 21:41:39,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 3029. [2020-09-24 21:41:39,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3029 states. [2020-09-24 21:41:39,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3029 states to 3029 states and 3672 transitions. [2020-09-24 21:41:39,814 INFO L78 Accepts]: Start accepts. Automaton has 3029 states and 3672 transitions. Word has length 174 [2020-09-24 21:41:39,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:41:39,815 INFO L479 AbstractCegarLoop]: Abstraction has 3029 states and 3672 transitions. [2020-09-24 21:41:39,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 21:41:39,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3029 states and 3672 transitions. [2020-09-24 21:41:39,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-24 21:41:39,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:41:39,834 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:39,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:41:39,836 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:41:39,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:41:39,836 INFO L82 PathProgramCache]: Analyzing trace with hash 14368118, now seen corresponding path program 1 times [2020-09-24 21:41:39,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:41:39,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50317858] [2020-09-24 21:41:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:41:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:39,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:39,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:40,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:41,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:41,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:42,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:42,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:42,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:43,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:44,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:44,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:44,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:44,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-24 21:41:44,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:41:44,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:41:44,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:44,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:41:44,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:41:44,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 21:41:44,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:41:45,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:41:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:45,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:45,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:45,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:41:45,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:41:45,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 21:41:45,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:41:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:41:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:41:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:41:45,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:41:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:45,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:45,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:45,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:45,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:41:45,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:41:45,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 21:41:45,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:45,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:41:45,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:41:45,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:41:45,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:41:45,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 21:41:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:45,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:45,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:45,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:41:45,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:41:45,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:41:45,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 21:41:45,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:41:45,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:41:45,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:41:45,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:41:45,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:41:45,664 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-09-24 21:41:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 21:41:45,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50317858] [2020-09-24 21:41:45,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:41:45,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:41:45,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780053328] [2020-09-24 21:41:45,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:41:45,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:41:45,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:41:45,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:41:45,937 INFO L87 Difference]: Start difference. First operand 3029 states and 3672 transitions. Second operand 13 states. [2020-09-24 21:41:46,961 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-09-24 21:41:47,295 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-09-24 21:41:47,879 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-09-24 21:41:51,999 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-09-24 21:41:53,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:41:53,814 INFO L93 Difference]: Finished difference Result 8677 states and 11487 transitions. [2020-09-24 21:41:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 21:41:53,820 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 187 [2020-09-24 21:41:53,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:41:53,850 INFO L225 Difference]: With dead ends: 8677 [2020-09-24 21:41:53,850 INFO L226 Difference]: Without dead ends: 5378 [2020-09-24 21:41:53,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=307, Invalid=685, Unknown=0, NotChecked=0, Total=992 [2020-09-24 21:41:53,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2020-09-24 21:41:54,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 4736. [2020-09-24 21:41:54,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4736 states. [2020-09-24 21:41:54,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4736 states to 4736 states and 5861 transitions. [2020-09-24 21:41:54,021 INFO L78 Accepts]: Start accepts. Automaton has 4736 states and 5861 transitions. Word has length 187 [2020-09-24 21:41:54,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:41:54,022 INFO L479 AbstractCegarLoop]: Abstraction has 4736 states and 5861 transitions. [2020-09-24 21:41:54,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:41:54,022 INFO L276 IsEmpty]: Start isEmpty. Operand 4736 states and 5861 transitions. [2020-09-24 21:41:54,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-24 21:41:54,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:41:54,041 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:41:54,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:41:54,041 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:41:54,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:41:54,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1635185660, now seen corresponding path program 1 times [2020-09-24 21:41:54,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:41:54,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469335563] [2020-09-24 21:41:54,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:41:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:41:54,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:54,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:54,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:41:54,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking...