/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_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:46:31,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:46:31,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:46:31,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:46:31,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:46:31,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:46:31,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:46:31,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:46:31,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:46:31,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:46:31,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:46:31,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:46:32,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:46:32,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:46:32,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:46:32,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:46:32,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:46:32,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:46:32,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:46:32,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:46:32,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:46:32,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:46:32,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:46:32,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:46:32,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:46:32,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:46:32,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:46:32,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:46:32,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:46:32,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:46:32,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:46:32,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:46:32,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:46:32,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:46:32,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:46:32,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:46:32,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:46:32,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:46:32,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:46:32,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:46:32,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:46:32,056 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 21:46:32,100 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:46:32,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:46:32,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:46:32,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:46:32,103 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:46:32,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:46:32,104 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:46:32,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:46:32,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:46:32,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:46:32,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:46:32,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:46:32,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:46:32,106 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:46:32,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:46:32,107 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:46:32,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:46:32,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:46:32,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:46:32,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:46:32,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:46:32,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:46:32,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:46:32,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:46:32,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:46:32,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:46:32,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:46:32,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:46:32,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:46:32,110 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 21:46:32,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:46:32,567 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:46:32,571 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:46:32,573 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:46:32,573 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:46:32,574 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-24 21:46:32,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2bc2cc3e/f86362c2d7054fc48baf89ea0566822c/FLAG34ebdb34d [2020-09-24 21:46:33,237 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:46:33,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-24 21:46:33,253 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2bc2cc3e/f86362c2d7054fc48baf89ea0566822c/FLAG34ebdb34d [2020-09-24 21:46:33,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2bc2cc3e/f86362c2d7054fc48baf89ea0566822c [2020-09-24 21:46:33,487 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:46:33,495 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:46:33,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:46:33,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:46:33,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:46:33,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:46:33" (1/1) ... [2020-09-24 21:46:33,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5957f606 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 21:46:33,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:46:33" (1/1) ... [2020-09-24 21:46:33,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:46:33,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:46:34,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:46:34,231 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:46:34,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:46:34,374 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:46:34,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:34 WrapperNode [2020-09-24 21:46:34,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:46:34,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:46:34,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:46:34,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:46:34,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:34" (1/1) ... [2020-09-24 21:46:34,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:34" (1/1) ... [2020-09-24 21:46:34,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:34" (1/1) ... [2020-09-24 21:46:34,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:34" (1/1) ... [2020-09-24 21:46:34,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:34" (1/1) ... [2020-09-24 21:46:34,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:34" (1/1) ... [2020-09-24 21:46:34,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:34" (1/1) ... [2020-09-24 21:46:34,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:46:34,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:46:34,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:46:34,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:46:34,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:34" (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 21:46:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:46:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:46:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:46:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:46:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:46:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:46:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:46:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:46:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:46:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:46:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:46:36,262 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:46:36,264 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:46:36,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:46:36 BoogieIcfgContainer [2020-09-24 21:46:36,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:46:36,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:46:36,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:46:36,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:46:36,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:46:33" (1/3) ... [2020-09-24 21:46:36,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef502cb 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 21:46:36,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:34" (2/3) ... [2020-09-24 21:46:36,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef502cb 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 21:46:36,290 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 21:46:36,292 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label30.c [2020-09-24 21:46:36,303 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:46:36,319 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:46:36,342 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:46:36,387 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:46:36,387 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:46:36,388 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:46:36,388 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:46:36,388 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:46:36,388 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:46:36,388 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:46:36,388 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:46:36,425 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-24 21:46:36,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 21:46:36,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:36,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:36,439 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:36,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:36,447 INFO L82 PathProgramCache]: Analyzing trace with hash 2082104676, now seen corresponding path program 1 times [2020-09-24 21:46:36,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:36,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268795867] [2020-09-24 21:46:36,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:36,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:37,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:37,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:37,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 21:46:37,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:37,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 800 [2020-09-24 21:46:37,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:37,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:37,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 21:46:37,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 21:46:37,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:46:37,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:37,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:37,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:37,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:37,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:37,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 21:46:37,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:37,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:37,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:37,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:46:37,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:37,601 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 21:46:37,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268795867] [2020-09-24 21:46:37,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:46:37,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:46:37,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983920298] [2020-09-24 21:46:37,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:46:37,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:37,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:46:37,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:46:37,642 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-24 21:46:40,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:40,447 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-24 21:46:40,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:46:40,449 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-24 21:46:40,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:40,485 INFO L225 Difference]: With dead ends: 1564 [2020-09-24 21:46:40,485 INFO L226 Difference]: Without dead ends: 828 [2020-09-24 21:46:40,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 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 21:46:40,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-24 21:46:40,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-24 21:46:40,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-24 21:46:40,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-24 21:46:40,608 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 62 [2020-09-24 21:46:40,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:40,609 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-24 21:46:40,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:46:40,609 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-24 21:46:40,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-24 21:46:40,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:40,617 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, 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] [2020-09-24 21:46:40,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:46:40,618 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:40,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:40,618 INFO L82 PathProgramCache]: Analyzing trace with hash 824518871, now seen corresponding path program 1 times [2020-09-24 21:46:40,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:40,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671476555] [2020-09-24 21:46:40,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:40,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:40,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:41,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:41,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:41,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:42,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:43,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:45,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:45,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:45,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-24 21:46:45,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:46:45,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 21:46:45,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:46:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 21:46:45,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:45,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:45,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:45,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:45,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:45,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:45,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:46:45,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:45,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:45,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:45,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:46:45,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:45,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:45,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:45,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:45,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:45,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:45,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-24 21:46:45,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:45,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:46,084 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:46,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671476555] [2020-09-24 21:46:46,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:46:46,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:46:46,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418471466] [2020-09-24 21:46:46,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:46:46,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:46,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:46:46,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:46:46,089 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 7 states. [2020-09-24 21:46:49,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:49,463 INFO L93 Difference]: Finished difference Result 2215 states and 2835 transitions. [2020-09-24 21:46:49,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:46:49,463 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-09-24 21:46:49,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:49,476 INFO L225 Difference]: With dead ends: 2215 [2020-09-24 21:46:49,476 INFO L226 Difference]: Without dead ends: 1424 [2020-09-24 21:46:49,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:46:49,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-09-24 21:46:49,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1301. [2020-09-24 21:46:49,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1301 states. [2020-09-24 21:46:49,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1560 transitions. [2020-09-24 21:46:49,572 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1560 transitions. Word has length 141 [2020-09-24 21:46:49,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:49,575 INFO L479 AbstractCegarLoop]: Abstraction has 1301 states and 1560 transitions. [2020-09-24 21:46:49,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:46:49,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1560 transitions. [2020-09-24 21:46:49,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-24 21:46:49,587 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:49,587 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, 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] [2020-09-24 21:46:49,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:46:49,588 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:49,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:49,588 INFO L82 PathProgramCache]: Analyzing trace with hash 223490446, now seen corresponding path program 1 times [2020-09-24 21:46:49,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:49,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772145356] [2020-09-24 21:46:49,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:49,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:49,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:49,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:49,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:50,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:52,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:52,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:52,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:52,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-24 21:46:52,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:46:52,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2924 [2020-09-24 21:46:52,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:52,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:46:52,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:46:52,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:46:52,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:52,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:52,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:52,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:52,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:52,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:52,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:46:52,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:46:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:46:52,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:52,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:52,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:52,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:52,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:52,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 21:46:52,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:52,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-09-24 21:46:52,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:52,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:46:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:52,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 21:46:52,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:53,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772145356] [2020-09-24 21:46:53,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:53,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 21:46:53,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562243472] [2020-09-24 21:46:53,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:46:53,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:53,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:46:53,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:46:53,152 INFO L87 Difference]: Start difference. First operand 1301 states and 1560 transitions. Second operand 11 states. [2020-09-24 21:46:57,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:57,542 INFO L93 Difference]: Finished difference Result 3489 states and 4398 transitions. [2020-09-24 21:46:57,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:46:57,543 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 144 [2020-09-24 21:46:57,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:57,586 INFO L225 Difference]: With dead ends: 3489 [2020-09-24 21:46:57,586 INFO L226 Difference]: Without dead ends: 2203 [2020-09-24 21:46:57,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:46:57,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2020-09-24 21:46:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 2164. [2020-09-24 21:46:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2164 states. [2020-09-24 21:46:57,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 2542 transitions. [2020-09-24 21:46:57,650 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 2542 transitions. Word has length 144 [2020-09-24 21:46:57,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:57,652 INFO L479 AbstractCegarLoop]: Abstraction has 2164 states and 2542 transitions. [2020-09-24 21:46:57,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:46:57,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 2542 transitions. [2020-09-24 21:46:57,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-09-24 21:46:57,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:57,663 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:57,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:46:57,663 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:57,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:57,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1445306711, now seen corresponding path program 1 times [2020-09-24 21:46:57,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:57,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897265672] [2020-09-24 21:46:57,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:57,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:57,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:58,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:59,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:00,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:00,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:01,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:02,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:02,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:02,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:02,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-09-24 21:47:02,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:47:02,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:47:02,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:02,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:47:02,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:47:02,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-24 21:47:02,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:02,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:47:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:02,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:02,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:02,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:47:02,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:02,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 21:47:02,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:47:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:47:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:47:02,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:02,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:47:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:02,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:03,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:03,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 21:47:03,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:03,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-24 21:47:03,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:03,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:47:03,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:47:03,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 21:47:03,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:03,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-24 21:47:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:03,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:03,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:04,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:04,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 21:47:04,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:47:04,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-09-24 21:47:04,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:04,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:47:04,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:47:04,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-24 21:47:04,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:04,763 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 128 proven. 53 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:47:04,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897265672] [2020-09-24 21:47:04,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:47:04,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 21:47:04,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037443810] [2020-09-24 21:47:04,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:47:04,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:47:04,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:47:04,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:47:04,766 INFO L87 Difference]: Start difference. First operand 2164 states and 2542 transitions. Second operand 11 states. [2020-09-24 21:47:09,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:47:09,149 INFO L93 Difference]: Finished difference Result 4439 states and 5222 transitions. [2020-09-24 21:47:09,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:47:09,149 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 304 [2020-09-24 21:47:09,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:47:09,160 INFO L225 Difference]: With dead ends: 4439 [2020-09-24 21:47:09,160 INFO L226 Difference]: Without dead ends: 2408 [2020-09-24 21:47:09,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-09-24 21:47:09,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2020-09-24 21:47:09,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2357. [2020-09-24 21:47:09,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2357 states. [2020-09-24 21:47:09,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 2738 transitions. [2020-09-24 21:47:09,223 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 2738 transitions. Word has length 304 [2020-09-24 21:47:09,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:47:09,224 INFO L479 AbstractCegarLoop]: Abstraction has 2357 states and 2738 transitions. [2020-09-24 21:47:09,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:47:09,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 2738 transitions. [2020-09-24 21:47:09,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-09-24 21:47:09,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:47:09,232 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, 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, 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 21:47:09,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:47:09,232 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:47:09,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:47:09,233 INFO L82 PathProgramCache]: Analyzing trace with hash -212415424, now seen corresponding path program 1 times [2020-09-24 21:47:09,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:47:09,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714363976] [2020-09-24 21:47:09,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:47:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:09,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:09,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:10,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:10,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:11,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:13,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:14,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:14,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:14,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-09-24 21:47:14,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:47:14,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 21:47:14,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:14,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:47:14,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:47:14,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 367 [2020-09-24 21:47:14,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:14,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:47:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:14,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:14,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:14,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:47:14,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:14,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:47:14,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:14,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:47:14,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:47:14,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:47:14,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:14,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:47:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:14,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:14,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:14,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:14,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 21:47:14,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:47:14,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 21:47:14,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:47:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:47:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-24 21:47:14,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:14,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 21:47:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:14,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:15,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:15,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:15,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 21:47:15,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:47:15,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-09-24 21:47:15,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:15,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:47:15,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:47:15,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-24 21:47:15,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:15,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-09-24 21:47:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:15,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:15,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:15,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:15,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 21:47:15,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:47:15,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-24 21:47:15,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:15,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:47:15,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:47:15,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 21:47:15,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:16,425 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 266 proven. 31 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-24 21:47:16,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714363976] [2020-09-24 21:47:16,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:47:16,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:47:16,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376381368] [2020-09-24 21:47:16,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:47:16,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:47:16,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:47:16,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:47:16,427 INFO L87 Difference]: Start difference. First operand 2357 states and 2738 transitions. Second operand 13 states. [2020-09-24 21:47:20,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:47:20,616 INFO L93 Difference]: Finished difference Result 5315 states and 6386 transitions. [2020-09-24 21:47:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 21:47:20,619 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 380 [2020-09-24 21:47:20,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:47:20,633 INFO L225 Difference]: With dead ends: 5315 [2020-09-24 21:47:20,633 INFO L226 Difference]: Without dead ends: 3306 [2020-09-24 21:47:20,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2020-09-24 21:47:20,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3306 states. [2020-09-24 21:47:20,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3306 to 3070. [2020-09-24 21:47:20,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3070 states. [2020-09-24 21:47:20,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3070 states to 3070 states and 3598 transitions. [2020-09-24 21:47:20,706 INFO L78 Accepts]: Start accepts. Automaton has 3070 states and 3598 transitions. Word has length 380 [2020-09-24 21:47:20,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:47:20,707 INFO L479 AbstractCegarLoop]: Abstraction has 3070 states and 3598 transitions. [2020-09-24 21:47:20,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:47:20,707 INFO L276 IsEmpty]: Start isEmpty. Operand 3070 states and 3598 transitions. [2020-09-24 21:47:20,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-09-24 21:47:20,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:47:20,717 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, 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, 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 21:47:20,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:47:20,717 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:47:20,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:47:20,718 INFO L82 PathProgramCache]: Analyzing trace with hash -869945938, now seen corresponding path program 1 times [2020-09-24 21:47:20,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:47:20,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005176725] [2020-09-24 21:47:20,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:47:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:20,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:20,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:21,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:21,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking...