/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/Problem14_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:46:31,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:46:31,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:46:31,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:46:31,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:46:31,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:46:31,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:46:31,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:46:31,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:46:31,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:46:31,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:46:31,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:46:31,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:46:31,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:46:31,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:46:31,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:46:31,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:46:31,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:46:31,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:46:31,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:46:31,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:46:31,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:46:31,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:46:31,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:46:31,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:46:31,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:46:31,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:46:31,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:46:31,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:46:31,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:46:31,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:46:31,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:46:31,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:46:31,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:46:31,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:46:31,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:46:31,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:46:31,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:46:31,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:46:31,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:46:31,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:46:31,483 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 21:46:31,533 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:46:31,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:46:31,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:46:31,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:46:31,536 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:46:31,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:46:31,537 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:46:31,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:46:31,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:46:31,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:46:31,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:46:31,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:46:31,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:46:31,540 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:46:31,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:46:31,540 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:46:31,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:46:31,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:46:31,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:46:31,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:46:31,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:46:31,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:46:31,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:46:31,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:46:31,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:46:31,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:46:31,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:46:31,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:46:31,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:46:31,544 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 21:46:31,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:46:32,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:46:32,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:46:32,015 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:46:32,016 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:46:32,017 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-24 21:46:32,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/708d8cd77/faac9bba84bf433f84bd440f58f1c758/FLAG087a31531 [2020-09-24 21:46:32,813 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:46:32,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-24 21:46:32,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/708d8cd77/faac9bba84bf433f84bd440f58f1c758/FLAG087a31531 [2020-09-24 21:46:33,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/708d8cd77/faac9bba84bf433f84bd440f58f1c758 [2020-09-24 21:46:33,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:46:33,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:46:33,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:46:33,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:46:33,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:46:33,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:46:33" (1/1) ... [2020-09-24 21:46:33,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc1b413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:33, skipping insertion in model container [2020-09-24 21:46:33,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:46:33" (1/1) ... [2020-09-24 21:46:33,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:46:33,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:46:33,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:46:33,640 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:46:33,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:46:33,908 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:46:33,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:33 WrapperNode [2020-09-24 21:46:33,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:46:33,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:46:33,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:46:33,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:46:33,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:33" (1/1) ... [2020-09-24 21:46:33,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:33" (1/1) ... [2020-09-24 21:46:33,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:33" (1/1) ... [2020-09-24 21:46:33,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:33" (1/1) ... [2020-09-24 21:46:33,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:33" (1/1) ... [2020-09-24 21:46:34,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:33" (1/1) ... [2020-09-24 21:46:34,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:33" (1/1) ... [2020-09-24 21:46:34,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:46:34,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:46:34,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:46:34,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:46:34,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:33" (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 21:46:34,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:46:34,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:46:34,136 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:46:34,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:46:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:46:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:46:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:46:34,137 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:46:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:46:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:46:34,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:46:36,014 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:46:36,014 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:46:36,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:46:36 BoogieIcfgContainer [2020-09-24 21:46:36,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:46:36,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:46:36,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:46:36,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:46:36,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:46:33" (1/3) ... [2020-09-24 21:46:36,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5031ded6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:46:36, skipping insertion in model container [2020-09-24 21:46:36,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:33" (2/3) ... [2020-09-24 21:46:36,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5031ded6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:46:36, skipping insertion in model container [2020-09-24 21:46:36,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:46:36" (3/3) ... [2020-09-24 21:46:36,036 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label24.c [2020-09-24 21:46:36,048 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:46:36,061 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:46:36,085 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:46:36,126 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:46:36,126 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:46:36,126 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:46:36,127 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:46:36,127 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:46:36,127 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:46:36,127 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:46:36,127 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:46:36,167 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-24 21:46:36,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 21:46:36,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:36,179 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] [2020-09-24 21:46:36,180 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:36,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:36,189 INFO L82 PathProgramCache]: Analyzing trace with hash -444760420, now seen corresponding path program 1 times [2020-09-24 21:46:36,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:36,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152944488] [2020-09-24 21:46:36,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:36,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:36,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:36,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:37,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:37,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 21:46:37,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:46:37,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-09-24 21:46:37,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:37,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:37,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:46:37,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 21:46:37,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:46:37,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:37,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:37,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:37,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:37,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:37,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 21:46:37,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:37,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:46:37,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:37,371 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 21:46:37,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152944488] [2020-09-24 21:46:37,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:46:37,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:46:37,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234813673] [2020-09-24 21:46:37,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:46:37,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:37,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:46:37,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:46:37,405 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-24 21:46:40,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:40,251 INFO L93 Difference]: Finished difference Result 1656 states and 2196 transitions. [2020-09-24 21:46:40,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:46:40,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-24 21:46:40,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:40,287 INFO L225 Difference]: With dead ends: 1656 [2020-09-24 21:46:40,287 INFO L226 Difference]: Without dead ends: 920 [2020-09-24 21:46:40,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:46:40,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-24 21:46:40,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 806. [2020-09-24 21:46:40,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-24 21:46:40,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 969 transitions. [2020-09-24 21:46:40,415 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 969 transitions. Word has length 60 [2020-09-24 21:46:40,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:40,416 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 969 transitions. [2020-09-24 21:46:40,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:46:40,416 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 969 transitions. [2020-09-24 21:46:40,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-24 21:46:40,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:40,437 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, 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] [2020-09-24 21:46:40,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:46:40,438 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:40,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:40,439 INFO L82 PathProgramCache]: Analyzing trace with hash -681557324, now seen corresponding path program 1 times [2020-09-24 21:46:40,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:40,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610384770] [2020-09-24 21:46:40,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:40,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:40,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:40,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:41,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:41,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:42,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:43,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:43,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-24 21:46:43,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:46:43,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3500 [2020-09-24 21:46:43,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:43,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:43,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 21:46:43,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 21:46:43,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:44,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:44,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:44,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:44,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:44,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:44,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:46:44,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:44,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:46:44,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:44,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:44,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:44,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:44,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:44,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:44,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 21:46:44,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:44,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:44,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:44,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:44,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:44,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610384770] [2020-09-24 21:46:44,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:46:44,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:46:44,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265649297] [2020-09-24 21:46:44,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:46:44,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:44,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:46:44,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:46:44,315 INFO L87 Difference]: Start difference. First operand 806 states and 969 transitions. Second operand 7 states. [2020-09-24 21:46:47,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:47,429 INFO L93 Difference]: Finished difference Result 2035 states and 2551 transitions. [2020-09-24 21:46:47,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:46:47,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-09-24 21:46:47,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:47,438 INFO L225 Difference]: With dead ends: 2035 [2020-09-24 21:46:47,439 INFO L226 Difference]: Without dead ends: 1244 [2020-09-24 21:46:47,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:46:47,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2020-09-24 21:46:47,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1196. [2020-09-24 21:46:47,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2020-09-24 21:46:47,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1450 transitions. [2020-09-24 21:46:47,508 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1450 transitions. Word has length 139 [2020-09-24 21:46:47,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:47,511 INFO L479 AbstractCegarLoop]: Abstraction has 1196 states and 1450 transitions. [2020-09-24 21:46:47,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:46:47,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1450 transitions. [2020-09-24 21:46:47,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 21:46:47,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:47,529 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, 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] [2020-09-24 21:46:47,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:46:47,529 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:47,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:47,530 INFO L82 PathProgramCache]: Analyzing trace with hash 791250278, now seen corresponding path program 1 times [2020-09-24 21:46:47,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:47,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980575918] [2020-09-24 21:46:47,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:47,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:47,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:47,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:48,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:49,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:50,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:50,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:50,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-24 21:46:50,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:46:50,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3051 [2020-09-24 21:46:50,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:50,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:46:50,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:46:50,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:46:50,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:50,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:50,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:50,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:50,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:50,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:50,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 21:46:50,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:46:50,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:50,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:46:50,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:50,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:50,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:50,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:51,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:51,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 21:46:51,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:51,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-09-24 21:46:51,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:46:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 21:46:51,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:51,542 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:51,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980575918] [2020-09-24 21:46:51,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:51,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 21:46:51,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202610558] [2020-09-24 21:46:51,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:46:51,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:51,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:46:51,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:46:51,545 INFO L87 Difference]: Start difference. First operand 1196 states and 1450 transitions. Second operand 11 states. [2020-09-24 21:46:56,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:56,519 INFO L93 Difference]: Finished difference Result 3276 states and 4171 transitions. [2020-09-24 21:46:56,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:46:56,520 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 142 [2020-09-24 21:46:56,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:56,532 INFO L225 Difference]: With dead ends: 3276 [2020-09-24 21:46:56,533 INFO L226 Difference]: Without dead ends: 2095 [2020-09-24 21:46:56,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:46:56,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2020-09-24 21:46:56,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 2061. [2020-09-24 21:46:56,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2061 states. [2020-09-24 21:46:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 2438 transitions. [2020-09-24 21:46:56,606 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 2438 transitions. Word has length 142 [2020-09-24 21:46:56,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:56,607 INFO L479 AbstractCegarLoop]: Abstraction has 2061 states and 2438 transitions. [2020-09-24 21:46:56,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:46:56,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 2438 transitions. [2020-09-24 21:46:56,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-09-24 21:46:56,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:56,612 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, 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, 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] [2020-09-24 21:46:56,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:46:56,613 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:56,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:56,613 INFO L82 PathProgramCache]: Analyzing trace with hash -192469169, now seen corresponding path program 1 times [2020-09-24 21:46:56,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:56,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940362943] [2020-09-24 21:46:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:56,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:56,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:57,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:57,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:59,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:59,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:01,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:01,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:01,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:01,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-09-24 21:47:01,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:47:01,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-09-24 21:47:01,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:01,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:47:01,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:47:01,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-24 21:47:01,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:01,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:47:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:01,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:01,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:01,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:47:01,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:01,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 21:47:01,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:01,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:47:01,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:47:01,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:47:01,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:01,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:47:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:01,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:02,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:02,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 21:47:02,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:02,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-24 21:47:02,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:02,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:47:02,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:47:02,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 21:47:02,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:02,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-24 21:47:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:02,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:02,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:02,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:02,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 21:47:02,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:47:02,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-09-24 21:47:02,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:02,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:47:02,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:47:02,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-24 21:47:02,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:03,720 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 124 proven. 53 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:47:03,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940362943] [2020-09-24 21:47:03,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:47:03,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 21:47:03,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151533627] [2020-09-24 21:47:03,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:47:03,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:47:03,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:47:03,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:47:03,724 INFO L87 Difference]: Start difference. First operand 2061 states and 2438 transitions. Second operand 11 states. [2020-09-24 21:47:09,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:47:09,383 INFO L93 Difference]: Finished difference Result 4031 states and 4809 transitions. [2020-09-24 21:47:09,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 21:47:09,384 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 302 [2020-09-24 21:47:09,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:47:09,394 INFO L225 Difference]: With dead ends: 4031 [2020-09-24 21:47:09,395 INFO L226 Difference]: Without dead ends: 2078 [2020-09-24 21:47:09,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2020-09-24 21:47:09,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2020-09-24 21:47:09,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 2014. [2020-09-24 21:47:09,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2014 states. [2020-09-24 21:47:09,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 2343 transitions. [2020-09-24 21:47:09,454 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 2343 transitions. Word has length 302 [2020-09-24 21:47:09,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:47:09,455 INFO L479 AbstractCegarLoop]: Abstraction has 2014 states and 2343 transitions. [2020-09-24 21:47:09,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:47:09,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 2343 transitions. [2020-09-24 21:47:09,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-09-24 21:47:09,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:47:09,463 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 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 21:47:09,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:47:09,463 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:47:09,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:47:09,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1050709208, now seen corresponding path program 1 times [2020-09-24 21:47:09,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:47:09,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535505171] [2020-09-24 21:47:09,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:47:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:09,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:09,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:10,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:11,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:13,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:14,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:14,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-09-24 21:47:14,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:47:14,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 21:47:14,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:14,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:47:14,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 254 [2020-09-24 21:47:14,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-24 21:47:14,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:14,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:47:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:14,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:14,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:14,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:47:14,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:14,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:47:14,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:47:14,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:47:14,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:47:14,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:14,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:47:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:14,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:14,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:14,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 21:47:14,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:14,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 21:47:14,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:14,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:47:14,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:47:14,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:47:14,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:14,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 21:47:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:14,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:14,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:14,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 21:47:14,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:15,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-24 21:47:15,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:15,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:47:15,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:47:15,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 21:47:15,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:47:15,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-09-24 21:47:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:15,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:15,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:15,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 21:47:15,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:15,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-24 21:47:15,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:15,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:47:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:47:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 21:47:15,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:15,366 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-24 21:47:15,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535505171] [2020-09-24 21:47:15,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:47:15,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:47:15,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038909030] [2020-09-24 21:47:15,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:47:15,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:47:15,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:47:15,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:47:15,369 INFO L87 Difference]: Start difference. First operand 2014 states and 2343 transitions. Second operand 7 states. [2020-09-24 21:47:18,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:47:18,901 INFO L93 Difference]: Finished difference Result 4387 states and 5281 transitions. [2020-09-24 21:47:18,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:47:18,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 378 [2020-09-24 21:47:18,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:47:18,916 INFO L225 Difference]: With dead ends: 4387 [2020-09-24 21:47:18,916 INFO L226 Difference]: Without dead ends: 2577 [2020-09-24 21:47:18,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:47:18,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2577 states. [2020-09-24 21:47:18,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2577 to 2518. [2020-09-24 21:47:18,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2518 states. [2020-09-24 21:47:18,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 2968 transitions. [2020-09-24 21:47:18,987 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 2968 transitions. Word has length 378 [2020-09-24 21:47:18,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:47:18,989 INFO L479 AbstractCegarLoop]: Abstraction has 2518 states and 2968 transitions. [2020-09-24 21:47:18,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:47:18,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 2968 transitions. [2020-09-24 21:47:18,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-09-24 21:47:18,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:47:18,997 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 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 21:47:18,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:47:18,998 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:47:18,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:47:18,998 INFO L82 PathProgramCache]: Analyzing trace with hash -615407338, now seen corresponding path program 1 times [2020-09-24 21:47:18,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:47:18,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475879077] [2020-09-24 21:47:18,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:47:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:19,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:19,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking...