/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_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:41:58,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:41:58,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:41:58,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:41:58,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:41:58,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:41:58,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:41:58,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:41:58,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:41:58,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:41:58,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:41:58,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:41:58,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:41:58,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:41:58,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:41:58,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:41:58,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:41:58,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:41:58,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:41:58,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:41:58,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:41:58,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:41:58,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:41:58,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:41:58,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 21:41:58,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:41:58,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:41:58,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:41:58,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:41:58,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:41:58,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:41:58,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:41:58,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:41:58,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:41:58,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:41:58,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:41:58,840 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 21:41:58,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:41:58,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:41:58,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:41:58,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:41:58,869 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:41:58,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:41:58,869 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:41:58,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:41:58,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:41:58,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:41:58,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:41:58,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:41:58,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:41:58,870 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:41:58,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:41:58,871 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:41:58,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:41:58,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:41:58,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:41:58,872 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:41:58,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:41:58,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:41:58,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:41:58,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:41:58,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:41:58,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:41:58,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:41:58,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:41:58,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:41:58,874 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 21:41:59,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:41:59,328 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:41:59,333 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:41:59,335 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:41:59,335 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:41:59,337 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label20.c [2020-09-24 21:41:59,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96b4136ff/cfbb75cf4c6d47cf97901b9a9865b5c6/FLAGdfbd4e95c [2020-09-24 21:42:00,134 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:42:00,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label20.c [2020-09-24 21:42:00,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96b4136ff/cfbb75cf4c6d47cf97901b9a9865b5c6/FLAGdfbd4e95c [2020-09-24 21:42:00,367 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96b4136ff/cfbb75cf4c6d47cf97901b9a9865b5c6 [2020-09-24 21:42:00,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:42:00,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:42:00,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:42:00,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:42:00,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:42:00,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:42:00" (1/1) ... [2020-09-24 21:42:00,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ed318b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:00, skipping insertion in model container [2020-09-24 21:42:00,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:42:00" (1/1) ... [2020-09-24 21:42:00,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:42:00,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:42:01,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:42:01,140 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:42:01,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:42:01,285 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:42:01,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:01 WrapperNode [2020-09-24 21:42:01,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:42:01,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:42:01,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:42:01,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:42:01,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:01" (1/1) ... [2020-09-24 21:42:01,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:01" (1/1) ... [2020-09-24 21:42:01,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:01" (1/1) ... [2020-09-24 21:42:01,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:01" (1/1) ... [2020-09-24 21:42:01,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:01" (1/1) ... [2020-09-24 21:42:01,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:01" (1/1) ... [2020-09-24 21:42:01,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:01" (1/1) ... [2020-09-24 21:42:01,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:42:01,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:42:01,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:42:01,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:42:01,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:01" (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 21:42:01,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:42:01,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:42:01,497 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:42:01,498 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:42:01,498 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:42:01,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:42:01,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:42:01,498 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:42:01,498 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:42:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:42:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:42:02,868 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:42:02,868 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:42:02,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:42:02 BoogieIcfgContainer [2020-09-24 21:42:02,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:42:02,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:42:02,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:42:02,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:42:02,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:42:00" (1/3) ... [2020-09-24 21:42:02,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411d18f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:42:02, skipping insertion in model container [2020-09-24 21:42:02,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:01" (2/3) ... [2020-09-24 21:42:02,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411d18f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:42:02, skipping insertion in model container [2020-09-24 21:42:02,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:42:02" (3/3) ... [2020-09-24 21:42:02,889 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label20.c [2020-09-24 21:42:02,901 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:42:02,913 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:42:02,936 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:42:02,971 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:42:02,971 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:42:02,971 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:42:02,972 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:42:02,972 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:42:02,972 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:42:02,972 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:42:02,972 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:42:03,007 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 21:42:03,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-24 21:42:03,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:03,030 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] [2020-09-24 21:42:03,031 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:03,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:03,039 INFO L82 PathProgramCache]: Analyzing trace with hash -17794678, now seen corresponding path program 1 times [2020-09-24 21:42:03,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:03,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839621373] [2020-09-24 21:42:03,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:03,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:03,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:04,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:05,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:05,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:08,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:08,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:08,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 21:42:08,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:42:08,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 21:42:08,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:08,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:42:08,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:42:08,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 21:42:08,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:42:08,956 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-09-24 21:42:09,075 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-09-24 21:42:09,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:09,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:09,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:09,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:09,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:09,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 21:42:09,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:09,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:42:09,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:09,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:09,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:09,754 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 21:42:09,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839621373] [2020-09-24 21:42:09,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:42:09,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-24 21:42:09,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527756993] [2020-09-24 21:42:09,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 21:42:09,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:09,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 21:42:09,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:42:09,787 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 16 states. [2020-09-24 21:42:10,370 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-24 21:42:10,648 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-09-24 21:42:10,939 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 95 [2020-09-24 21:42:11,629 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2020-09-24 21:42:12,108 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 91 [2020-09-24 21:42:13,335 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 86 [2020-09-24 21:42:13,560 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2020-09-24 21:42:13,911 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-09-24 21:42:14,703 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2020-09-24 21:42:15,185 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2020-09-24 21:42:15,387 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-09-24 21:42:16,413 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-09-24 21:42:16,872 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-09-24 21:42:19,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:19,283 INFO L93 Difference]: Finished difference Result 1871 states and 2663 transitions. [2020-09-24 21:42:19,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 21:42:19,287 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 125 [2020-09-24 21:42:19,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:19,324 INFO L225 Difference]: With dead ends: 1871 [2020-09-24 21:42:19,324 INFO L226 Difference]: Without dead ends: 1243 [2020-09-24 21:42:19,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=469, Invalid=1171, Unknown=0, NotChecked=0, Total=1640 [2020-09-24 21:42:19,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-09-24 21:42:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1076. [2020-09-24 21:42:19,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-09-24 21:42:19,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1296 transitions. [2020-09-24 21:42:19,473 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1296 transitions. Word has length 125 [2020-09-24 21:42:19,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:19,474 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1296 transitions. [2020-09-24 21:42:19,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 21:42:19,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1296 transitions. [2020-09-24 21:42:19,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 21:42:19,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:19,487 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 21:42:19,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:42:19,487 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:19,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:19,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1966462065, now seen corresponding path program 1 times [2020-09-24 21:42:19,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:19,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767159031] [2020-09-24 21:42:19,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:19,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:19,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:19,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:20,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:21,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:21,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:22,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:24,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:24,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-24 21:42:24,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:42:24,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 21:42:24,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:24,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 21:42:24,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:42:24,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-24 21:42:24,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:42:25,469 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2020-09-24 21:42:25,698 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2020-09-24 21:42:25,896 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2020-09-24 21:42:26,080 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2020-09-24 21:42:26,262 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2020-09-24 21:42:26,485 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 35 [2020-09-24 21:42:26,656 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2020-09-24 21:42:26,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:27,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:27,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:27,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:27,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:27,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 21:42:27,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:27,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:42:27,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:27,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:27,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:27,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:42:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:27,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:27,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:27,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:27,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:42:27,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:42:27,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 21:42:27,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:42:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:42:27,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:42:27,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:42:27,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767159031] [2020-09-24 21:42:27,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:42:27,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-24 21:42:27,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738851791] [2020-09-24 21:42:27,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-24 21:42:27,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:27,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-24 21:42:27,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2020-09-24 21:42:27,459 INFO L87 Difference]: Start difference. First operand 1076 states and 1296 transitions. Second operand 24 states. [2020-09-24 21:42:28,172 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-09-24 21:42:28,468 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2020-09-24 21:42:28,880 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-09-24 21:42:29,078 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-09-24 21:42:29,369 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-09-24 21:42:30,112 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-24 21:42:30,433 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-09-24 21:42:30,747 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-09-24 21:42:31,007 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-09-24 21:42:31,326 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-09-24 21:42:32,056 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2020-09-24 21:42:32,394 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-09-24 21:42:32,837 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2020-09-24 21:42:33,124 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-09-24 21:42:33,458 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-09-24 21:42:33,771 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 98 [2020-09-24 21:42:34,133 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-24 21:42:34,450 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 98 [2020-09-24 21:42:34,996 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2020-09-24 21:42:35,639 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-09-24 21:42:35,890 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-09-24 21:42:36,159 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2020-09-24 21:42:36,411 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-09-24 21:42:36,712 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-09-24 21:42:37,028 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-24 21:42:37,454 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-09-24 21:42:37,766 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-09-24 21:42:38,006 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-09-24 21:42:38,222 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-24 21:42:38,460 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-09-24 21:42:38,872 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-09-24 21:42:39,181 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 21:42:39,588 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 21:42:40,270 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-09-24 21:42:40,466 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-24 21:42:40,735 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-09-24 21:42:40,894 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-24 21:42:41,237 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-09-24 21:42:41,432 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-09-24 21:42:41,656 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-24 21:42:41,936 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-09-24 21:42:42,431 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-09-24 21:42:42,897 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-09-24 21:42:43,072 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 21:42:43,294 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-09-24 21:42:43,491 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-24 21:42:43,702 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-09-24 21:42:44,039 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-09-24 21:42:44,370 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-24 21:42:44,792 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-09-24 21:42:45,079 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-24 21:42:45,372 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-09-24 21:42:45,895 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2020-09-24 21:42:46,278 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-09-24 21:42:46,681 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-09-24 21:42:47,178 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-09-24 21:42:47,536 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-09-24 21:42:47,690 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-09-24 21:42:49,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:49,861 INFO L93 Difference]: Finished difference Result 3083 states and 3936 transitions. [2020-09-24 21:42:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-09-24 21:42:49,861 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 142 [2020-09-24 21:42:49,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:49,872 INFO L225 Difference]: With dead ends: 3083 [2020-09-24 21:42:49,872 INFO L226 Difference]: Without dead ends: 2087 [2020-09-24 21:42:49,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3747 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=2771, Invalid=8571, Unknown=0, NotChecked=0, Total=11342 [2020-09-24 21:42:49,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2020-09-24 21:42:49,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 1727. [2020-09-24 21:42:49,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-09-24 21:42:49,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2123 transitions. [2020-09-24 21:42:49,940 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2123 transitions. Word has length 142 [2020-09-24 21:42:49,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:49,941 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2123 transitions. [2020-09-24 21:42:49,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-24 21:42:49,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2123 transitions. [2020-09-24 21:42:49,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-24 21:42:49,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:49,948 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] [2020-09-24 21:42:49,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:42:49,948 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:49,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:49,949 INFO L82 PathProgramCache]: Analyzing trace with hash -160815384, now seen corresponding path program 1 times [2020-09-24 21:42:49,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:49,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329464923] [2020-09-24 21:42:49,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:50,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:50,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:50,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:50,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:52,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:52,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:52,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:53,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:53,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:54,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:54,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:54,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-24 21:42:54,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:42:54,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 21:42:54,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:54,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:42:54,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:42:54,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 21:42:54,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0