/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 SequenceOfStatements --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:03:21,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:03:21,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:03:21,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:03:21,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:03:21,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:03:21,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:03:21,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:03:21,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:03:21,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:03:21,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:03:21,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:03:21,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:03:21,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:03:21,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:03:21,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:03:21,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:03:21,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:03:21,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:03:21,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:03:21,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:03:21,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:03:21,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:03:21,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:03:21,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:03:21,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:03:21,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:03:21,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:03:21,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:03:21,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:03:21,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:03:21,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:03:21,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:03:21,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:03:21,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:03:21,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:03:21,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:03:21,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:03:21,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:03:21,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:03:21,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:03:21,486 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 [2020-10-14 22:03:21,526 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:03:21,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:03:21,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:03:21,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:03:21,530 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:03:21,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:03:21,531 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:03:21,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:03:21,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:03:21,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:03:21,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:03:21,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:03:21,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:03:21,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:03:21,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:03:21,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:03:21,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:03:21,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:03:21,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:03:21,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:03:21,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:03:21,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:03:21,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:03:21,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:03:21,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:03:21,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:03:21,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:03:21,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:03:21,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:03:21,538 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 -> SequenceOfStatements 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:03:21,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:03:21,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:03:21,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:03:21,876 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:03:21,877 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:03:21,877 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label44.c [2020-10-14 22:03:21,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc2d81a58/ab747758c41e40e1aac240b6725bb968/FLAG5567fdd3c [2020-10-14 22:03:22,698 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:03:22,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label44.c [2020-10-14 22:03:22,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc2d81a58/ab747758c41e40e1aac240b6725bb968/FLAG5567fdd3c [2020-10-14 22:03:22,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc2d81a58/ab747758c41e40e1aac240b6725bb968 [2020-10-14 22:03:22,904 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:03:22,907 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:03:22,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:03:22,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:03:22,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:03:22,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:22" (1/1) ... [2020-10-14 22:03:22,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603d5fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:22, skipping insertion in model container [2020-10-14 22:03:22,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:03:22" (1/1) ... [2020-10-14 22:03:22,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:03:23,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:03:24,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:03:24,101 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:03:24,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:03:24,436 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:03:24,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:24 WrapperNode [2020-10-14 22:03:24,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:03:24,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:03:24,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:03:24,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:03:24,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:24" (1/1) ... [2020-10-14 22:03:24,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:24" (1/1) ... [2020-10-14 22:03:24,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:24" (1/1) ... [2020-10-14 22:03:24,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:24" (1/1) ... [2020-10-14 22:03:24,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:24" (1/1) ... [2020-10-14 22:03:24,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:24" (1/1) ... [2020-10-14 22:03:24,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:24" (1/1) ... [2020-10-14 22:03:24,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:03:24,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:03:24,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:03:24,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:03:24,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:24" (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 [2020-10-14 22:03:24,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:03:24,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:03:24,805 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:03:24,805 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:03:24,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:03:24,806 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:03:24,806 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:03:24,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:03:24,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:03:24,807 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:03:24,808 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:03:24,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:03:24,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:03:31,051 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:03:31,052 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:03:31,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:03:31 BoogieIcfgContainer [2020-10-14 22:03:31,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:03:31,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:03:31,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:03:31,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:03:31,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:03:22" (1/3) ... [2020-10-14 22:03:31,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db4acca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:03:31, skipping insertion in model container [2020-10-14 22:03:31,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:03:24" (2/3) ... [2020-10-14 22:03:31,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db4acca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:03:31, skipping insertion in model container [2020-10-14 22:03:31,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:03:31" (3/3) ... [2020-10-14 22:03:31,071 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label44.c [2020-10-14 22:03:31,085 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:03:31,095 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:03:31,112 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:03:31,144 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:03:31,144 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:03:31,144 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:03:31,144 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:03:31,145 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:03:31,145 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:03:31,145 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:03:31,145 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:03:31,178 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 22:03:31,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 22:03:31,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:31,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:03:31,190 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:31,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:31,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1323114568, now seen corresponding path program 1 times [2020-10-14 22:03:31,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:31,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600953448] [2020-10-14 22:03:31,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:31,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:31,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:31,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 22:03:31,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:31,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-14 22:03:31,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:31,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:31,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:03:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:03:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:03:31,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:03:32,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:32,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:32,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:32,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:32,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:32,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 22:03:32,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:32,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:32,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:32,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:32,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:03:32,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:03:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:03:32,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600953448] [2020-10-14 22:03:32,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:03:32,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 22:03:32,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311327822] [2020-10-14 22:03:32,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:03:32,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:32,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:03:32,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:03:32,170 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 5 states. [2020-10-14 22:03:39,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:39,194 INFO L93 Difference]: Finished difference Result 1203 states and 2166 transitions. [2020-10-14 22:03:39,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:03:39,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-14 22:03:39,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:39,219 INFO L225 Difference]: With dead ends: 1203 [2020-10-14 22:03:39,219 INFO L226 Difference]: Without dead ends: 702 [2020-10-14 22:03:39,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:03:39,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-10-14 22:03:39,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 696. [2020-10-14 22:03:39,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-10-14 22:03:39,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1015 transitions. [2020-10-14 22:03:39,338 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1015 transitions. Word has length 72 [2020-10-14 22:03:39,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:39,339 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 1015 transitions. [2020-10-14 22:03:39,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:03:39,339 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1015 transitions. [2020-10-14 22:03:39,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 22:03:39,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:39,347 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, 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] [2020-10-14 22:03:39,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:03:39,348 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:39,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:39,348 INFO L82 PathProgramCache]: Analyzing trace with hash -394780911, now seen corresponding path program 1 times [2020-10-14 22:03:39,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:39,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057930105] [2020-10-14 22:03:39,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:39,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:39,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:40,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:40,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:40,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 22:03:40,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:03:40,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1376 [2020-10-14 22:03:40,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:40,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:40,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:03:40,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:03:40,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 22:03:40,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:03:40,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:40,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:40,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:40,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:40,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:40,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 22:03:40,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:40,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:40,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:40,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:40,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:03:40,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:40,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:40,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:41,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:41,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:41,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 22:03:41,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:03:41,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-14 22:03:41,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:41,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:41,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:41,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:41,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 22:03:41,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:41,370 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:03:41,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057930105] [2020-10-14 22:03:41,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:03:41,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:03:41,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459161072] [2020-10-14 22:03:41,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:03:41,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:41,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:03:41,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:03:41,375 INFO L87 Difference]: Start difference. First operand 696 states and 1015 transitions. Second operand 7 states. [2020-10-14 22:03:50,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:50,741 INFO L93 Difference]: Finished difference Result 2041 states and 2989 transitions. [2020-10-14 22:03:50,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:03:50,742 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-10-14 22:03:50,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:50,752 INFO L225 Difference]: With dead ends: 2041 [2020-10-14 22:03:50,752 INFO L226 Difference]: Without dead ends: 1351 [2020-10-14 22:03:50,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:03:50,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2020-10-14 22:03:50,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1321. [2020-10-14 22:03:50,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1321 states. [2020-10-14 22:03:50,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1711 transitions. [2020-10-14 22:03:50,843 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1711 transitions. Word has length 151 [2020-10-14 22:03:50,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:50,847 INFO L479 AbstractCegarLoop]: Abstraction has 1321 states and 1711 transitions. [2020-10-14 22:03:50,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:03:50,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1711 transitions. [2020-10-14 22:03:50,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-14 22:03:50,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:50,864 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:03:50,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:03:50,864 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:50,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:50,865 INFO L82 PathProgramCache]: Analyzing trace with hash 2044450927, now seen corresponding path program 1 times [2020-10-14 22:03:50,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:50,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83795063] [2020-10-14 22:03:50,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:51,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:51,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:51,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:53,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:54,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:54,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:56,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:56,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-14 22:03:56,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:03:56,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 22:03:56,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:56,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 22:03:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:03:56,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-14 22:03:56,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:56,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:56,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:56,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:56,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:56,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:56,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:03:56,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:56,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:56,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:56,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:56,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:03:56,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:56,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:56,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:56,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:56,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:03:56,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:56,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 22:03:56,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:56,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:56,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:56,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:56,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 22:03:56,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:56,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:03:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:56,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:56,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:56,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:56,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 22:03:56,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:03:56,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-14 22:03:56,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:56,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:56,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:56,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:56,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 22:03:56,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:57,129 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:03:57,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83795063] [2020-10-14 22:03:57,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:03:57,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:03:57,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211063997] [2020-10-14 22:03:57,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:03:57,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:57,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:03:57,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:03:57,133 INFO L87 Difference]: Start difference. First operand 1321 states and 1711 transitions. Second operand 9 states. [2020-10-14 22:04:09,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:09,411 INFO L93 Difference]: Finished difference Result 3343 states and 4686 transitions. [2020-10-14 22:04:09,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 22:04:09,412 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 246 [2020-10-14 22:04:09,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:09,440 INFO L225 Difference]: With dead ends: 3343 [2020-10-14 22:04:09,440 INFO L226 Difference]: Without dead ends: 2646 [2020-10-14 22:04:09,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2020-10-14 22:04:09,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2020-10-14 22:04:09,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2275. [2020-10-14 22:04:09,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2275 states. [2020-10-14 22:04:09,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 2917 transitions. [2020-10-14 22:04:09,564 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 2917 transitions. Word has length 246 [2020-10-14 22:04:09,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:09,566 INFO L479 AbstractCegarLoop]: Abstraction has 2275 states and 2917 transitions. [2020-10-14 22:04:09,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:04:09,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 2917 transitions. [2020-10-14 22:04:09,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-14 22:04:09,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:09,585 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:09,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:04:09,586 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:09,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:09,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1427484232, now seen corresponding path program 1 times [2020-10-14 22:04:09,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:09,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373422648] [2020-10-14 22:04:09,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:09,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:09,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:10,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:14,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:14,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:14,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-14 22:04:14,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:04:14,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 22:04:14,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:14,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:04:14,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:04:14,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 22:04:14,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:14,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:14,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:14,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:14,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:14,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:14,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:04:14,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:14,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:14,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:14,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:14,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:04:14,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:14,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:14,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:15,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:15,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:04:15,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:15,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-14 22:04:15,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:15,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:15,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:04:15,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:15,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 22:04:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:15,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:15,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:15,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:04:15,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:15,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 22:04:15,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:15,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:15,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:15,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-14 22:04:15,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:15,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 130 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:04:15,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373422648] [2020-10-14 22:04:15,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:15,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:04:15,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752481993] [2020-10-14 22:04:15,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:04:15,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:15,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:04:15,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:04:15,947 INFO L87 Difference]: Start difference. First operand 2275 states and 2917 transitions. Second operand 7 states. [2020-10-14 22:04:26,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:26,008 INFO L93 Difference]: Finished difference Result 4288 states and 5589 transitions. [2020-10-14 22:04:26,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:04:26,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2020-10-14 22:04:26,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:26,033 INFO L225 Difference]: With dead ends: 4288 [2020-10-14 22:04:26,033 INFO L226 Difference]: Without dead ends: 2326 [2020-10-14 22:04:26,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:04:26,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2326 states. [2020-10-14 22:04:26,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2326 to 2284. [2020-10-14 22:04:26,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2284 states. [2020-10-14 22:04:26,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 2924 transitions. [2020-10-14 22:04:26,117 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 2924 transitions. Word has length 368 [2020-10-14 22:04:26,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:26,117 INFO L479 AbstractCegarLoop]: Abstraction has 2284 states and 2924 transitions. [2020-10-14 22:04:26,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:04:26,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 2924 transitions. [2020-10-14 22:04:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2020-10-14 22:04:26,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:26,129 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:26,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:04:26,130 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:26,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:26,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1638924929, now seen corresponding path program 1 times [2020-10-14 22:04:26,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:26,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105092562] [2020-10-14 22:04:26,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:26,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:26,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:27,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:28,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:28,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 454 [2020-10-14 22:04:28,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:04:28,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2708 [2020-10-14 22:04:28,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:28,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:28,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 22:04:28,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 22:04:28,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 22:04:29,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:29,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:29,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:29,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:29,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:29,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:04:29,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:29,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:29,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:29,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:29,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:29,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:29,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:29,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:29,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:29,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:04:29,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:29,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-14 22:04:29,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:29,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:29,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:29,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:29,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 22:04:29,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:29,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:04:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:29,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:29,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:29,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 22:04:29,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:29,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 22:04:29,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:29,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:04:29,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:30,312 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:04:30,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105092562] [2020-10-14 22:04:30,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:30,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:04:30,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840997738] [2020-10-14 22:04:30,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:04:30,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:30,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:04:30,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:04:30,321 INFO L87 Difference]: Start difference. First operand 2284 states and 2924 transitions. Second operand 8 states. [2020-10-14 22:04:42,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:42,301 INFO L93 Difference]: Finished difference Result 5911 states and 8379 transitions. [2020-10-14 22:04:42,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:04:42,302 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 442 [2020-10-14 22:04:42,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:42,324 INFO L225 Difference]: With dead ends: 5911 [2020-10-14 22:04:42,324 INFO L226 Difference]: Without dead ends: 4249 [2020-10-14 22:04:42,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 22:04:42,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4249 states. [2020-10-14 22:04:42,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4249 to 4222. [2020-10-14 22:04:42,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4222 states. [2020-10-14 22:04:42,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4222 states to 4222 states and 5592 transitions. [2020-10-14 22:04:42,473 INFO L78 Accepts]: Start accepts. Automaton has 4222 states and 5592 transitions. Word has length 442 [2020-10-14 22:04:42,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:42,474 INFO L479 AbstractCegarLoop]: Abstraction has 4222 states and 5592 transitions. [2020-10-14 22:04:42,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:04:42,475 INFO L276 IsEmpty]: Start isEmpty. Operand 4222 states and 5592 transitions. [2020-10-14 22:04:42,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2020-10-14 22:04:42,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:42,482 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:42,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:04:42,482 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:42,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:42,483 INFO L82 PathProgramCache]: Analyzing trace with hash -657050250, now seen corresponding path program 1 times [2020-10-14 22:04:42,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:42,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104167804] [2020-10-14 22:04:42,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:42,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:42,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:43,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:44,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:44,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:47,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:47,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:47,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-14 22:04:47,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:04:47,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 22:04:47,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:47,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:47,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 22:04:47,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:04:47,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 411 [2020-10-14 22:04:47,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:47,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:47,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:47,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:47,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:47,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:47,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:04:47,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:47,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:47,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:47,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:47,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:04:47,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:47,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:47,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:47,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:47,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:04:47,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:47,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 22:04:47,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:47,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 22:04:47,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:47,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:04:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:48,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:48,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:48,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:04:48,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:48,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-14 22:04:48,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:48,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:48,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:04:48,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:48,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-14 22:04:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:48,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:48,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:48,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 22:04:48,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:48,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 22:04:48,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:48,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:48,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:48,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 22:04:48,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:04:49,063 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 375 proven. 4 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 22:04:49,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104167804] [2020-10-14 22:04:49,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:49,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:04:49,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545680813] [2020-10-14 22:04:49,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:04:49,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:49,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:04:49,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:04:49,065 INFO L87 Difference]: Start difference. First operand 4222 states and 5592 transitions. Second operand 8 states. [2020-10-14 22:04:59,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:59,448 INFO L93 Difference]: Finished difference Result 8810 states and 12263 transitions. [2020-10-14 22:04:59,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:04:59,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 473 [2020-10-14 22:04:59,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:59,474 INFO L225 Difference]: With dead ends: 8810 [2020-10-14 22:04:59,475 INFO L226 Difference]: Without dead ends: 6143 [2020-10-14 22:04:59,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:04:59,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6143 states. [2020-10-14 22:04:59,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6143 to 5773. [2020-10-14 22:04:59,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5773 states. [2020-10-14 22:04:59,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5773 states to 5773 states and 7326 transitions. [2020-10-14 22:04:59,619 INFO L78 Accepts]: Start accepts. Automaton has 5773 states and 7326 transitions. Word has length 473 [2020-10-14 22:04:59,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:59,620 INFO L479 AbstractCegarLoop]: Abstraction has 5773 states and 7326 transitions. [2020-10-14 22:04:59,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:04:59,620 INFO L276 IsEmpty]: Start isEmpty. Operand 5773 states and 7326 transitions. [2020-10-14 22:04:59,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2020-10-14 22:04:59,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:59,629 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:59,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:04:59,630 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:59,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:59,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1631670113, now seen corresponding path program 1 times [2020-10-14 22:04:59,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:59,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304010757] [2020-10-14 22:04:59,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:59,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:59,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:00,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:00,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:03,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:04,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:04,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 569 [2020-10-14 22:05:04,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:05:04,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 22:05:04,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:04,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:04,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:05:04,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 22:05:04,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-14 22:05:04,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:04,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:04,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:04,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:04,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:04,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:04,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:05:04,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:04,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:04,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:04,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:04,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:04,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:04,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:04,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:04,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:04,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:05:04,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:04,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 22:05:04,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:04,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:05:04,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:04,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:05:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:05,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:05,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:05,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:05,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:05:05,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:05:05,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-14 22:05:05,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:05,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:05,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:05,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:05,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:05:05,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:05,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-14 22:05:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:05,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:05,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:05,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 22:05:05,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:05,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 22:05:05,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:05,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:05,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:05,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:05,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:05:05,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:05,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-14 22:05:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:05,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:05,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:05,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 22:05:05,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:05,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 22:05:05,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:05,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:05,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:05,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 22:05:05,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:05,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:05,919 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 437 proven. 257 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-14 22:05:05,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304010757] [2020-10-14 22:05:05,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:05:05,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:05:05,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596886247] [2020-10-14 22:05:05,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:05:05,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:05,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:05:05,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:05:05,922 INFO L87 Difference]: Start difference. First operand 5773 states and 7326 transitions. Second operand 8 states. [2020-10-14 22:05:20,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:20,797 INFO L93 Difference]: Finished difference Result 12294 states and 16424 transitions. [2020-10-14 22:05:20,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:05:20,799 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 553 [2020-10-14 22:05:20,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:20,831 INFO L225 Difference]: With dead ends: 12294 [2020-10-14 22:05:20,831 INFO L226 Difference]: Without dead ends: 7142 [2020-10-14 22:05:20,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-14 22:05:20,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7142 states. [2020-10-14 22:05:21,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7142 to 7070. [2020-10-14 22:05:21,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7070 states. [2020-10-14 22:05:21,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7070 states to 7070 states and 8800 transitions. [2020-10-14 22:05:21,067 INFO L78 Accepts]: Start accepts. Automaton has 7070 states and 8800 transitions. Word has length 553 [2020-10-14 22:05:21,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:21,068 INFO L479 AbstractCegarLoop]: Abstraction has 7070 states and 8800 transitions. [2020-10-14 22:05:21,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:05:21,068 INFO L276 IsEmpty]: Start isEmpty. Operand 7070 states and 8800 transitions. [2020-10-14 22:05:21,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2020-10-14 22:05:21,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:21,080 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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:05:21,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:05:21,081 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:21,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:21,082 INFO L82 PathProgramCache]: Analyzing trace with hash -525711616, now seen corresponding path program 1 times [2020-10-14 22:05:21,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:21,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343142548] [2020-10-14 22:05:21,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:21,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:21,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:22,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:23,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:26,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:26,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 577 [2020-10-14 22:05:26,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:05:26,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 22:05:26,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:26,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:26,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:26,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-14 22:05:26,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 22:05:26,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:26,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:26,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:26,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:26,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:26,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:26,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:05:26,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:26,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:26,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:26,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:26,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:26,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:26,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:05:26,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:26,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 22:05:26,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:26,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:26,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:26,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:26,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:26,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:26,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:05:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:26,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:26,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:26,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:05:26,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:26,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 22:05:26,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:26,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:26,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:26,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:26,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:05:26,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:26,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 22:05:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:26,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:26,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:26,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 22:05:26,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:26,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 22:05:26,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:26,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:26,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:26,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 22:05:26,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 406 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:05:26,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343142548] [2020-10-14 22:05:26,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:05:26,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:05:26,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540482554] [2020-10-14 22:05:26,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:05:26,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:26,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:05:26,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:05:26,934 INFO L87 Difference]: Start difference. First operand 7070 states and 8800 transitions. Second operand 7 states. [2020-10-14 22:05:35,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:35,269 INFO L93 Difference]: Finished difference Result 14208 states and 18346 transitions. [2020-10-14 22:05:35,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:05:35,271 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 563 [2020-10-14 22:05:35,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:35,313 INFO L225 Difference]: With dead ends: 14208 [2020-10-14 22:05:35,313 INFO L226 Difference]: Without dead ends: 8693 [2020-10-14 22:05:35,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:05:35,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8693 states. [2020-10-14 22:05:35,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8693 to 8677. [2020-10-14 22:05:35,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8677 states. [2020-10-14 22:05:35,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8677 states to 8677 states and 10980 transitions. [2020-10-14 22:05:35,522 INFO L78 Accepts]: Start accepts. Automaton has 8677 states and 10980 transitions. Word has length 563 [2020-10-14 22:05:35,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:35,523 INFO L479 AbstractCegarLoop]: Abstraction has 8677 states and 10980 transitions. [2020-10-14 22:05:35,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:05:35,523 INFO L276 IsEmpty]: Start isEmpty. Operand 8677 states and 10980 transitions. [2020-10-14 22:05:35,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-10-14 22:05:35,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:35,535 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:05:35,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:05:35,535 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:35,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:35,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1281572260, now seen corresponding path program 1 times [2020-10-14 22:05:35,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:35,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98724089] [2020-10-14 22:05:35,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:35,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:36,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:36,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:37,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:38,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:40,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:40,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 594 [2020-10-14 22:05:40,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:05:40,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 22:05:40,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:40,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:40,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:05:40,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-14 22:05:40,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-14 22:05:40,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:40,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:40,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:40,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:40,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:40,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:40,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:05:40,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:40,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:40,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:40,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:40,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:40,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:40,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:40,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:40,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:40,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:05:40,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:40,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 22:05:40,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:40,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:40,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:40,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:05:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:41,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:41,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:41,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:05:41,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:41,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 22:05:41,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:41,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:41,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:41,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:41,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:05:41,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:41,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 22:05:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:41,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:41,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:41,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 22:05:41,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:41,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 22:05:41,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:41,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:41,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:41,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:41,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 22:05:41,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 358 proven. 66 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-14 22:05:41,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98724089] [2020-10-14 22:05:41,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:05:41,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:05:41,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568102956] [2020-10-14 22:05:41,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:05:41,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:41,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:05:41,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:05:41,403 INFO L87 Difference]: Start difference. First operand 8677 states and 10980 transitions. Second operand 6 states. [2020-10-14 22:05:54,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:54,949 INFO L93 Difference]: Finished difference Result 18572 states and 26979 transitions. [2020-10-14 22:05:54,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:05:54,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 580 [2020-10-14 22:05:54,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:55,020 INFO L225 Difference]: With dead ends: 18572 [2020-10-14 22:05:55,021 INFO L226 Difference]: Without dead ends: 13621 [2020-10-14 22:05:55,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:05:55,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13621 states. [2020-10-14 22:05:55,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13621 to 13491. [2020-10-14 22:05:55,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13491 states. [2020-10-14 22:05:55,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13491 states to 13491 states and 17756 transitions. [2020-10-14 22:05:55,517 INFO L78 Accepts]: Start accepts. Automaton has 13491 states and 17756 transitions. Word has length 580 [2020-10-14 22:05:55,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:55,519 INFO L479 AbstractCegarLoop]: Abstraction has 13491 states and 17756 transitions. [2020-10-14 22:05:55,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:05:55,519 INFO L276 IsEmpty]: Start isEmpty. Operand 13491 states and 17756 transitions. [2020-10-14 22:05:55,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2020-10-14 22:05:55,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:55,540 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:05:55,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:05:55,541 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:55,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:55,541 INFO L82 PathProgramCache]: Analyzing trace with hash 197313357, now seen corresponding path program 1 times [2020-10-14 22:05:55,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:55,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874995563] [2020-10-14 22:05:55,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:55,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:56,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:57,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:57,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:59,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:59,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 598 [2020-10-14 22:05:59,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:05:59,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4220 [2020-10-14 22:05:59,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:59,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:59,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-14 22:05:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 22:05:59,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:00,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:00,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:00,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:00,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:00,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:00,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:06:00,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:00,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:00,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:00,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:00,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:00,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:00,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:06:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:00,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:00,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:00,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:06:00,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:00,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 22:06:00,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:00,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:00,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:00,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:00,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:00,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:00,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:06:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:00,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:00,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:00,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:06:00,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:00,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 22:06:00,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:00,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:00,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:00,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:00,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:06:00,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:00,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 22:06:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:00,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:00,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:00,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 22:06:00,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:00,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 22:06:00,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:00,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 22:06:00,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:00,721 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 432 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:06:00,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874995563] [2020-10-14 22:06:00,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:06:00,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:06:00,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375434811] [2020-10-14 22:06:00,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:06:00,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:00,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:06:00,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:06:00,723 INFO L87 Difference]: Start difference. First operand 13491 states and 17756 transitions. Second operand 7 states. [2020-10-14 22:06:11,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:06:11,473 INFO L93 Difference]: Finished difference Result 26413 states and 35087 transitions. [2020-10-14 22:06:11,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:06:11,481 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 584 [2020-10-14 22:06:11,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:06:11,527 INFO L225 Difference]: With dead ends: 26413 [2020-10-14 22:06:11,527 INFO L226 Difference]: Without dead ends: 13544 [2020-10-14 22:06:11,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:06:11,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13544 states. [2020-10-14 22:06:11,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13544 to 13221. [2020-10-14 22:06:11,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13221 states. [2020-10-14 22:06:11,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13221 states to 13221 states and 15981 transitions. [2020-10-14 22:06:11,832 INFO L78 Accepts]: Start accepts. Automaton has 13221 states and 15981 transitions. Word has length 584 [2020-10-14 22:06:11,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:06:11,833 INFO L479 AbstractCegarLoop]: Abstraction has 13221 states and 15981 transitions. [2020-10-14 22:06:11,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:06:11,834 INFO L276 IsEmpty]: Start isEmpty. Operand 13221 states and 15981 transitions. [2020-10-14 22:06:11,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2020-10-14 22:06:11,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:11,852 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:06:11,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:06:11,852 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:11,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:11,853 INFO L82 PathProgramCache]: Analyzing trace with hash 645662791, now seen corresponding path program 1 times [2020-10-14 22:06:11,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:11,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349668721] [2020-10-14 22:06:11,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:12,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:12,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:12,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:12,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:14,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:17,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:17,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 677 [2020-10-14 22:06:17,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:06:17,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 22:06:17,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:17,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:17,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:17,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 22:06:17,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 22:06:17,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:17,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:17,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:17,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:17,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:17,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:17,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:06:17,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:17,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:17,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:17,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:17,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:17,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:17,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:06:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:17,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:17,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:17,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:06:17,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:17,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 22:06:17,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:17,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:17,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:17,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:17,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 22:06:17,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:17,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:06:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:17,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:17,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:17,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:06:17,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:17,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 22:06:17,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:17,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:06:17,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:17,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 22:06:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:17,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:17,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:17,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 22:06:17,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:17,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 22:06:17,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:17,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:17,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:17,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 22:06:17,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:17,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:06:17,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-10-14 22:06:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:17,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:17,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:17,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 22:06:17,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:17,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 22:06:17,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:17,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:17,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:17,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 22:06:17,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:17,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:18,310 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 376 proven. 188 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-10-14 22:06:18,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349668721] [2020-10-14 22:06:18,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:06:18,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:06:18,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532312220] [2020-10-14 22:06:18,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:06:18,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:18,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:06:18,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:06:18,312 INFO L87 Difference]: Start difference. First operand 13221 states and 15981 transitions. Second operand 8 states. [2020-10-14 22:06:32,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:06:32,247 INFO L93 Difference]: Finished difference Result 26817 states and 32570 transitions. [2020-10-14 22:06:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:06:32,249 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 661 [2020-10-14 22:06:32,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:06:32,288 INFO L225 Difference]: With dead ends: 26817 [2020-10-14 22:06:32,288 INFO L226 Difference]: Without dead ends: 14218 [2020-10-14 22:06:32,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:06:32,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14218 states. [2020-10-14 22:06:32,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14218 to 14179. [2020-10-14 22:06:32,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14179 states. [2020-10-14 22:06:32,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14179 states to 14179 states and 17016 transitions. [2020-10-14 22:06:32,558 INFO L78 Accepts]: Start accepts. Automaton has 14179 states and 17016 transitions. Word has length 661 [2020-10-14 22:06:32,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:06:32,559 INFO L479 AbstractCegarLoop]: Abstraction has 14179 states and 17016 transitions. [2020-10-14 22:06:32,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:06:32,559 INFO L276 IsEmpty]: Start isEmpty. Operand 14179 states and 17016 transitions. [2020-10-14 22:06:32,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2020-10-14 22:06:32,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:06:32,581 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:06:32,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:06:32,581 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:06:32,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:06:32,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1307284223, now seen corresponding path program 1 times [2020-10-14 22:06:32,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:06:32,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611455589] [2020-10-14 22:06:32,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:06:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:32,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:33,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:33,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:34,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:35,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:37,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:37,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 689 [2020-10-14 22:06:37,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:06:37,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 22:06:37,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:37,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:37,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 22:06:37,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 22:06:37,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-14 22:06:37,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:38,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:06:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:38,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:38,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:38,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:06:38,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:38,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:06:38,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:38,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:38,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:06:38,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:38,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:06:38,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:38,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:06:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:38,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:38,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:38,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:06:38,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:38,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 22:06:38,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:38,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:38,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:06:38,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:06:38,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 22:06:38,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:38,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:06:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:38,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:38,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:38,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:06:38,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:38,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 22:06:38,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:38,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:06:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:06:38,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:38,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:06:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:38,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:38,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:38,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 22:06:38,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:06:38,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 22:06:38,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:38,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:38,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:06:38,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:38,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:06:38,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:38,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2020-10-14 22:06:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:06:38,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:38,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:06:39,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:06:39,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 22:06:39,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:06:39,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 22:06:39,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:06:39,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:06:39,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:06:39,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:06:39,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 22:06:39,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:06:39,480 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 570 proven. 196 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 22:06:39,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611455589] [2020-10-14 22:06:39,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:06:39,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 22:06:39,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207104205] [2020-10-14 22:06:39,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 22:06:39,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:06:39,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 22:06:39,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:06:39,482 INFO L87 Difference]: Start difference. First operand 14179 states and 17016 transitions. Second operand 12 states. [2020-10-14 22:07:05,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:07:05,769 INFO L93 Difference]: Finished difference Result 38014 states and 49253 transitions. [2020-10-14 22:07:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 22:07:05,777 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 673 [2020-10-14 22:07:05,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:07:05,867 INFO L225 Difference]: With dead ends: 38014 [2020-10-14 22:07:05,867 INFO L226 Difference]: Without dead ends: 24412 [2020-10-14 22:07:05,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=338, Invalid=1222, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 22:07:05,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24412 states. [2020-10-14 22:07:06,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24412 to 22593. [2020-10-14 22:07:06,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22593 states. [2020-10-14 22:07:06,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22593 states to 22593 states and 28010 transitions. [2020-10-14 22:07:06,526 INFO L78 Accepts]: Start accepts. Automaton has 22593 states and 28010 transitions. Word has length 673 [2020-10-14 22:07:06,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:07:06,527 INFO L479 AbstractCegarLoop]: Abstraction has 22593 states and 28010 transitions. [2020-10-14 22:07:06,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 22:07:06,527 INFO L276 IsEmpty]: Start isEmpty. Operand 22593 states and 28010 transitions. [2020-10-14 22:07:06,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2020-10-14 22:07:06,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:07:06,553 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:07:06,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:07:06,554 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:07:06,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:07:06,554 INFO L82 PathProgramCache]: Analyzing trace with hash -182046448, now seen corresponding path program 1 times [2020-10-14 22:07:06,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:07:06,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969496285] [2020-10-14 22:07:06,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:07:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:07:06,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:06,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:07,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:07:07,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking...