/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/Problem10_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:45:29,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:45:29,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:45:29,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:45:29,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:45:29,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:45:29,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:45:29,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:45:29,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:45:29,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:45:29,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:45:29,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:45:29,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:45:29,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:45:29,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:45:29,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:45:29,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:45:29,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:45:29,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:45:29,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:45:29,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:45:29,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:45:29,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:45:29,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:45:29,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:45:29,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:45:29,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:45:29,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:45:29,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:45:29,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:45:29,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:45:29,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:45:29,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:45:29,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:45:29,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:45:29,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:45:29,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:45:29,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:45:29,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:45:29,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:45:29,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:45:29,444 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 21:45:29,493 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:45:29,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:45:29,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:45:29,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:45:29,497 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:45:29,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:45:29,498 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:45:29,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:45:29,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:45:29,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:45:29,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:45:29,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:45:29,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:45:29,500 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:45:29,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:45:29,502 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:45:29,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:45:29,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:45:29,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:45:29,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:45:29,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:45:29,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:45:29,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:45:29,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:45:29,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:45:29,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:45:29,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:45:29,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:45:29,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:45:29,504 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 21:45:29,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:45:30,011 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:45:30,016 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:45:30,019 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:45:30,020 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:45:30,021 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-09-24 21:45:30,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2fd54fdbd/160ad164b99c4fc1a7955bd32eefc041/FLAG4b53256fd [2020-09-24 21:45:30,744 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:45:30,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-09-24 21:45:30,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2fd54fdbd/160ad164b99c4fc1a7955bd32eefc041/FLAG4b53256fd [2020-09-24 21:45:31,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2fd54fdbd/160ad164b99c4fc1a7955bd32eefc041 [2020-09-24 21:45:31,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:45:31,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:45:31,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:31,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:45:31,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:45:31,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:31" (1/1) ... [2020-09-24 21:45:31,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b4ea78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:31, skipping insertion in model container [2020-09-24 21:45:31,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:31" (1/1) ... [2020-09-24 21:45:31,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:45:31,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:45:31,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:31,592 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:45:31,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:31,864 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:45:31,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:31 WrapperNode [2020-09-24 21:45:31,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:31,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:45:31,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:45:31,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:45:31,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:31" (1/1) ... [2020-09-24 21:45:31,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:31" (1/1) ... [2020-09-24 21:45:31,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:31" (1/1) ... [2020-09-24 21:45:31,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:31" (1/1) ... [2020-09-24 21:45:31,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:31" (1/1) ... [2020-09-24 21:45:31,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:31" (1/1) ... [2020-09-24 21:45:31,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:31" (1/1) ... [2020-09-24 21:45:31,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:45:31,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:45:31,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:45:31,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:45:31,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:31" (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 21:45:32,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:45:32,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:45:32,083 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:45:32,083 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:45:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:45:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:45:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:45:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:45:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:45:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:45:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:45:33,490 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:45:33,490 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:45:33,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:33 BoogieIcfgContainer [2020-09-24 21:45:33,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:45:33,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:45:33,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:45:33,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:45:33,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:45:31" (1/3) ... [2020-09-24 21:45:33,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b275517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:33, skipping insertion in model container [2020-09-24 21:45:33,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:31" (2/3) ... [2020-09-24 21:45:33,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b275517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:33, skipping insertion in model container [2020-09-24 21:45:33,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:33" (3/3) ... [2020-09-24 21:45:33,509 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label36.c [2020-09-24 21:45:33,520 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:45:33,531 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:45:33,553 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:45:33,588 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:45:33,588 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:45:33,588 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:45:33,588 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:45:33,588 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:45:33,589 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:45:33,589 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:45:33,589 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:45:33,621 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:45:33,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 21:45:33,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:33,634 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] [2020-09-24 21:45:33,634 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:33,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:33,644 INFO L82 PathProgramCache]: Analyzing trace with hash -2108492313, now seen corresponding path program 1 times [2020-09-24 21:45:33,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:33,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428516466] [2020-09-24 21:45:33,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:33,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:34,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:34,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:34,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 21:45:34,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:34,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 953 [2020-09-24 21:45:34,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:34,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:34,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:45:34,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 21:45:34,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 21:45:35,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:35,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:35,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:35,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:35,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:35,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 21:45:35,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:35,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:35,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:35,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:45:35,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:35,159 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 21:45:35,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428516466] [2020-09-24 21:45:35,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:35,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:45:35,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226266712] [2020-09-24 21:45:35,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:45:35,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:35,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:45:35,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:45:35,204 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-24 21:45:38,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:38,002 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-24 21:45:38,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:45:38,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-09-24 21:45:38,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:38,031 INFO L225 Difference]: With dead ends: 1226 [2020-09-24 21:45:38,031 INFO L226 Difference]: Without dead ends: 707 [2020-09-24 21:45:38,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:38,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-24 21:45:38,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-24 21:45:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-24 21:45:38,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-24 21:45:38,218 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 58 [2020-09-24 21:45:38,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:38,220 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-24 21:45:38,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:45:38,221 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-24 21:45:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-24 21:45:38,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:38,243 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-24 21:45:38,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:45:38,244 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:38,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:38,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1020620813, now seen corresponding path program 1 times [2020-09-24 21:45:38,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:38,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122708737] [2020-09-24 21:45:38,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:38,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:38,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:39,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:39,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:41,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:43,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:43,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-24 21:45:43,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:45:43,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 21:45:43,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:43,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 21:45:43,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:43,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:43,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:43,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:43,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:43,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:43,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 21:45:43,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:43,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:43,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:43,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:43,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:43,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:43,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:43,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:43,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 21:45:43,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:43,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-24 21:45:43,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:43,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:43,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:43,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:45:43,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 21:45:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:43,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122708737] [2020-09-24 21:45:43,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:43,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:45:43,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515498286] [2020-09-24 21:45:43,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:43,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:43,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:43,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:43,860 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 7 states. [2020-09-24 21:45:46,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:46,093 INFO L93 Difference]: Finished difference Result 1676 states and 2320 transitions. [2020-09-24 21:45:46,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:45:46,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2020-09-24 21:45:46,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:46,104 INFO L225 Difference]: With dead ends: 1676 [2020-09-24 21:45:46,104 INFO L226 Difference]: Without dead ends: 996 [2020-09-24 21:45:46,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:45:46,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2020-09-24 21:45:46,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 852. [2020-09-24 21:45:46,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-09-24 21:45:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1127 transitions. [2020-09-24 21:45:46,156 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1127 transitions. Word has length 150 [2020-09-24 21:45:46,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:46,157 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1127 transitions. [2020-09-24 21:45:46,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:46,158 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1127 transitions. [2020-09-24 21:45:46,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-24 21:45:46,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:46,161 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-24 21:45:46,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:45:46,162 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:46,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:46,162 INFO L82 PathProgramCache]: Analyzing trace with hash 529447495, now seen corresponding path program 1 times [2020-09-24 21:45:46,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:46,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161924714] [2020-09-24 21:45:46,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:46,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:46,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:46,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:49,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:49,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:49,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:51,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:51,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-24 21:45:51,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:45:51,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 21:45:51,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:51,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:45:51,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:51,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-24 21:45:51,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:51,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:51,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:51,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:51,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:51,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:51,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 21:45:51,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:51,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:51,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:51,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:45:51,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:51,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:51,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:51,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:52,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:52,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 21:45:52,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:52,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-09-24 21:45:52,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:45:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:52,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 21:45:52,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:52,356 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:52,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161924714] [2020-09-24 21:45:52,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:52,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:45:52,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868364527] [2020-09-24 21:45:52,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:45:52,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:52,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:45:52,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:45:52,360 INFO L87 Difference]: Start difference. First operand 852 states and 1127 transitions. Second operand 12 states. [2020-09-24 21:45:53,566 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-09-24 21:45:55,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:55,638 INFO L93 Difference]: Finished difference Result 1633 states and 2194 transitions. [2020-09-24 21:45:55,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:45:55,639 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 166 [2020-09-24 21:45:55,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:55,646 INFO L225 Difference]: With dead ends: 1633 [2020-09-24 21:45:55,646 INFO L226 Difference]: Without dead ends: 925 [2020-09-24 21:45:55,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:45:55,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2020-09-24 21:45:55,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 861. [2020-09-24 21:45:55,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-09-24 21:45:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1135 transitions. [2020-09-24 21:45:55,680 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1135 transitions. Word has length 166 [2020-09-24 21:45:55,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:55,680 INFO L479 AbstractCegarLoop]: Abstraction has 861 states and 1135 transitions. [2020-09-24 21:45:55,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:45:55,681 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1135 transitions. [2020-09-24 21:45:55,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-24 21:45:55,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:55,684 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-24 21:45:55,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:45:55,684 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:55,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:55,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1782617119, now seen corresponding path program 1 times [2020-09-24 21:45:55,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:55,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269496079] [2020-09-24 21:45:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:55,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:55,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:56,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:58,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:59,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:00,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:00,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 21:46:00,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:46:00,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-24 21:46:00,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:00,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:00,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:46:00,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 21:46:00,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:00,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:00,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:00,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:00,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:00,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:00,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:46:00,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:00,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:46:00,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:00,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:00,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:01,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:01,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 21:46:01,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:01,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-24 21:46:01,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:01,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:01,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:01,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 21:46:01,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:01,368 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:01,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269496079] [2020-09-24 21:46:01,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:46:01,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:46:01,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495369322] [2020-09-24 21:46:01,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:46:01,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:01,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:46:01,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:46:01,373 INFO L87 Difference]: Start difference. First operand 861 states and 1135 transitions. Second operand 7 states. [2020-09-24 21:46:03,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:03,149 INFO L93 Difference]: Finished difference Result 1886 states and 2559 transitions. [2020-09-24 21:46:03,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:46:03,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-09-24 21:46:03,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:03,159 INFO L225 Difference]: With dead ends: 1886 [2020-09-24 21:46:03,159 INFO L226 Difference]: Without dead ends: 1040 [2020-09-24 21:46:03,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:46:03,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2020-09-24 21:46:03,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 864. [2020-09-24 21:46:03,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2020-09-24 21:46:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1103 transitions. [2020-09-24 21:46:03,197 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1103 transitions. Word has length 190 [2020-09-24 21:46:03,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:03,199 INFO L479 AbstractCegarLoop]: Abstraction has 864 states and 1103 transitions. [2020-09-24 21:46:03,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:46:03,200 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1103 transitions. [2020-09-24 21:46:03,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-24 21:46:03,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:03,204 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-24 21:46:03,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:46:03,205 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:03,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:03,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1052145571, now seen corresponding path program 1 times [2020-09-24 21:46:03,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:03,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501571898] [2020-09-24 21:46:03,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:03,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:03,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:03,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:03,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:04,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:05,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:08,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:08,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:08,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-24 21:46:08,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:46:08,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 21:46:08,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:46:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-09-24 21:46:08,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:08,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:08,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:08,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:08,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:08,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:08,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:46:08,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:08,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:08,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:08,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:46:08,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:08,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:08,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:08,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:08,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:08,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:08,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:08,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-24 21:46:08,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:08,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:08,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:08,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:08,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:08,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:08,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:08,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:08,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 21:46:08,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:08,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 21:46:08,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:08,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:08,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:08,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:46:08,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:09,173 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-24 21:46:09,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501571898] [2020-09-24 21:46:09,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:09,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:46:09,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227119751] [2020-09-24 21:46:09,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:46:09,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:09,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:46:09,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:46:09,177 INFO L87 Difference]: Start difference. First operand 864 states and 1103 transitions. Second operand 9 states. [2020-09-24 21:46:13,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:13,140 INFO L93 Difference]: Finished difference Result 2497 states and 3430 transitions. [2020-09-24 21:46:13,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:46:13,140 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 229 [2020-09-24 21:46:13,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:13,151 INFO L225 Difference]: With dead ends: 2497 [2020-09-24 21:46:13,151 INFO L226 Difference]: Without dead ends: 1807 [2020-09-24 21:46:13,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:46:13,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2020-09-24 21:46:13,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1536. [2020-09-24 21:46:13,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1536 states. [2020-09-24 21:46:13,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 2047 transitions. [2020-09-24 21:46:13,226 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 2047 transitions. Word has length 229 [2020-09-24 21:46:13,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:13,226 INFO L479 AbstractCegarLoop]: Abstraction has 1536 states and 2047 transitions. [2020-09-24 21:46:13,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:46:13,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 2047 transitions. [2020-09-24 21:46:13,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-24 21:46:13,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:13,233 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-24 21:46:13,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:46:13,233 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:13,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:13,234 INFO L82 PathProgramCache]: Analyzing trace with hash 2109952049, now seen corresponding path program 1 times [2020-09-24 21:46:13,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:13,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421158106] [2020-09-24 21:46:13,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:13,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:13,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:13,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:13,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:14,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:18,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:18,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-09-24 21:46:18,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:46:18,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 21:46:18,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 21:46:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 21:46:18,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:18,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:18,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:18,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:18,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:18,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:18,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:46:18,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:46:18,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:18,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:18,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:18,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:18,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:46:18,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:18,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-24 21:46:18,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:18,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:18,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:18,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:46:18,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:18,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 21:46:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:18,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:18,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:18,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 21:46:18,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:18,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 21:46:18,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:18,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:46:18,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-24 21:46:18,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:46:18,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:18,728 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 84 proven. 69 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 21:46:18,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421158106] [2020-09-24 21:46:18,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:18,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:46:18,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232569109] [2020-09-24 21:46:18,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:46:18,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:18,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:46:18,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:46:18,731 INFO L87 Difference]: Start difference. First operand 1536 states and 2047 transitions. Second operand 7 states.