/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=NARROWEST --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/Problem16_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:14:31,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:14:31,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:14:31,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:14:31,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:14:31,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:14:31,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:14:31,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:14:31,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:14:31,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:14:31,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:14:31,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:14:31,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:14:31,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:14:31,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:14:31,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:14:31,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:14:31,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:14:31,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:14:31,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:14:31,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:14:31,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:14:31,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:14:31,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:14:31,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:14:31,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:14:31,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:14:31,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:14:31,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:14:31,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:14:31,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:14:31,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:14:31,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:14:31,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:14:31,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:14:31,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:14:31,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:14:31,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:14:31,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:14:31,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:14:31,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:14:31,580 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 [2020-10-13 09:14:31,603 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:14:31,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:14:31,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:14:31,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:14:31,605 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:14:31,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:14:31,606 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:14:31,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:14:31,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:14:31,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:14:31,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:14:31,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:14:31,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:14:31,607 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:14:31,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:14:31,607 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:14:31,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:14:31,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:14:31,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:14:31,608 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:14:31,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:14:31,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:14:31,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:14:31,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:14:31,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:14:31,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:14:31,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:14:31,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:14:31,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:14:31,610 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:14:31,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:14:31,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:14:31,940 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:14:31,942 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:14:31,944 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:14:31,944 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label08.c [2020-10-13 09:14:32,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/730cf6c94/d4993bcd1398436aa221b40644b68f6e/FLAG94a5aa7d5 [2020-10-13 09:14:32,710 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:14:32,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label08.c [2020-10-13 09:14:32,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/730cf6c94/d4993bcd1398436aa221b40644b68f6e/FLAG94a5aa7d5 [2020-10-13 09:14:32,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/730cf6c94/d4993bcd1398436aa221b40644b68f6e [2020-10-13 09:14:32,900 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:14:32,902 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:14:32,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:14:32,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:14:32,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:14:32,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:32" (1/1) ... [2020-10-13 09:14:32,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532b1c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:32, skipping insertion in model container [2020-10-13 09:14:32,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:32" (1/1) ... [2020-10-13 09:14:32,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:14:33,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:14:33,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:14:33,808 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:14:34,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:14:34,141 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:14:34,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:34 WrapperNode [2020-10-13 09:14:34,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:14:34,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:14:34,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:14:34,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:14:34,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:34" (1/1) ... [2020-10-13 09:14:34,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:34" (1/1) ... [2020-10-13 09:14:34,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:34" (1/1) ... [2020-10-13 09:14:34,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:34" (1/1) ... [2020-10-13 09:14:34,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:34" (1/1) ... [2020-10-13 09:14:34,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:34" (1/1) ... [2020-10-13 09:14:34,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:34" (1/1) ... [2020-10-13 09:14:34,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:14:34,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:14:34,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:14:34,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:14:34,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:14:34,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:14:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:14:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:14:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:14:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:14:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:14:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:14:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:14:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:14:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:14:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:14:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:14:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:14:38,801 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:14:38,801 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:14:38,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:38 BoogieIcfgContainer [2020-10-13 09:14:38,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:14:38,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:14:38,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:14:38,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:14:38,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:14:32" (1/3) ... [2020-10-13 09:14:38,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e71f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:38, skipping insertion in model container [2020-10-13 09:14:38,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:34" (2/3) ... [2020-10-13 09:14:38,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e71f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:38, skipping insertion in model container [2020-10-13 09:14:38,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:38" (3/3) ... [2020-10-13 09:14:38,818 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label08.c [2020-10-13 09:14:38,828 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:14:38,836 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:14:38,850 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:14:38,877 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:14:38,877 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:14:38,877 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:14:38,877 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:14:38,877 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:14:38,877 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:14:38,878 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:14:38,878 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:14:38,904 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-13 09:14:38,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 09:14:38,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:14:38,912 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] [2020-10-13 09:14:38,913 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:14:38,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:14:38,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1769288174, now seen corresponding path program 1 times [2020-10-13 09:14:38,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:14:38,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445388291] [2020-10-13 09:14:38,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:14:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:39,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:39,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:39,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 09:14:39,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:39,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-13 09:14:39,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:14:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:14:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:14:39,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:14:39,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:14:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:39,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:39,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:39,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:14:39,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:39,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:14:39,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:39,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:39,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:39,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:14:39,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:14:39,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445388291] [2020-10-13 09:14:39,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:14:39,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:14:39,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344347779] [2020-10-13 09:14:39,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:14:39,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:14:39,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:14:39,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:14:39,564 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 4 states. [2020-10-13 09:14:43,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:14:43,607 INFO L93 Difference]: Finished difference Result 1169 states and 2164 transitions. [2020-10-13 09:14:43,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:14:43,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-13 09:14:43,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:14:43,636 INFO L225 Difference]: With dead ends: 1169 [2020-10-13 09:14:43,636 INFO L226 Difference]: Without dead ends: 696 [2020-10-13 09:14:43,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:14:43,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-13 09:14:43,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 692. [2020-10-13 09:14:43,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-13 09:14:43,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1014 transitions. [2020-10-13 09:14:43,769 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1014 transitions. Word has length 23 [2020-10-13 09:14:43,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:14:43,770 INFO L479 AbstractCegarLoop]: Abstraction has 692 states and 1014 transitions. [2020-10-13 09:14:43,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:14:43,770 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1014 transitions. [2020-10-13 09:14:43,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 09:14:43,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:14:43,788 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:14:43,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:14:43,792 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:14:43,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:14:43,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1695060638, now seen corresponding path program 1 times [2020-10-13 09:14:43,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:14:43,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895760748] [2020-10-13 09:14:43,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:14:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:43,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:44,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:44,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:44,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 09:14:44,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:14:44,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 906 [2020-10-13 09:14:44,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:14:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:14:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:14:44,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:14:44,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:14:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:44,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:44,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:44,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:14:44,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:44,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:14:44,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:44,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:44,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:44,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:44,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:14:44,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:14:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:44,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:44,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:14:44,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:44,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:14:44,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:44,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:44,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:44,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:14:44,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:45,032 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:14:45,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895760748] [2020-10-13 09:14:45,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:14:45,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:14:45,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326649053] [2020-10-13 09:14:45,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:14:45,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:14:45,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:14:45,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:14:45,038 INFO L87 Difference]: Start difference. First operand 692 states and 1014 transitions. Second operand 5 states. [2020-10-13 09:14:48,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:14:48,758 INFO L93 Difference]: Finished difference Result 2063 states and 3056 transitions. [2020-10-13 09:14:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:14:48,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-13 09:14:48,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:14:48,769 INFO L225 Difference]: With dead ends: 2063 [2020-10-13 09:14:48,769 INFO L226 Difference]: Without dead ends: 1377 [2020-10-13 09:14:48,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:14:48,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2020-10-13 09:14:48,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1373. [2020-10-13 09:14:48,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1373 states. [2020-10-13 09:14:48,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1805 transitions. [2020-10-13 09:14:48,824 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1805 transitions. Word has length 99 [2020-10-13 09:14:48,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:14:48,825 INFO L479 AbstractCegarLoop]: Abstraction has 1373 states and 1805 transitions. [2020-10-13 09:14:48,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:14:48,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1805 transitions. [2020-10-13 09:14:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-13 09:14:48,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:14:48,834 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:14:48,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:14:48,835 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:14:48,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:14:48,835 INFO L82 PathProgramCache]: Analyzing trace with hash -648133169, now seen corresponding path program 1 times [2020-10-13 09:14:48,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:14:48,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921888208] [2020-10-13 09:14:48,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:14:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:48,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:49,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:49,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:49,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:49,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:51,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:51,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-13 09:14:51,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:14:51,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2786 [2020-10-13 09:14:51,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:14:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-13 09:14:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:14:51,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:51,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:14:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:51,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:51,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:51,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:14:51,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:51,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:14:51,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:51,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:51,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:51,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:51,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:14:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:51,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:51,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:51,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:14:51,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:51,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:14:51,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:51,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:51,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:14:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:51,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:51,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:51,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:14:51,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:51,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:14:51,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:14:51,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-13 09:14:51,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921888208] [2020-10-13 09:14:51,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:14:51,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:14:51,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742333786] [2020-10-13 09:14:51,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:14:51,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:14:51,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:14:51,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:14:51,971 INFO L87 Difference]: Start difference. First operand 1373 states and 1805 transitions. Second operand 6 states. [2020-10-13 09:14:57,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:14:57,098 INFO L93 Difference]: Finished difference Result 4112 states and 5747 transitions. [2020-10-13 09:14:57,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:14:57,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2020-10-13 09:14:57,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:14:57,131 INFO L225 Difference]: With dead ends: 4112 [2020-10-13 09:14:57,131 INFO L226 Difference]: Without dead ends: 2745 [2020-10-13 09:14:57,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:14:57,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2020-10-13 09:14:57,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2741. [2020-10-13 09:14:57,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2741 states. [2020-10-13 09:14:57,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 3703 transitions. [2020-10-13 09:14:57,218 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 3703 transitions. Word has length 186 [2020-10-13 09:14:57,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:14:57,219 INFO L479 AbstractCegarLoop]: Abstraction has 2741 states and 3703 transitions. [2020-10-13 09:14:57,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:14:57,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 3703 transitions. [2020-10-13 09:14:57,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-13 09:14:57,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:14:57,224 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:14:57,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:14:57,224 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:14:57,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:14:57,225 INFO L82 PathProgramCache]: Analyzing trace with hash 2099488738, now seen corresponding path program 1 times [2020-10-13 09:14:57,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:14:57,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453757837] [2020-10-13 09:14:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:14:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:57,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:57,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:57,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:58,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:58,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:59,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:59,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-13 09:14:59,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:14:59,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1871 [2020-10-13 09:14:59,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:59,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:14:59,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 09:14:59,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:14:59,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:59,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:14:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:59,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:59,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:59,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:14:59,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:59,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:14:59,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:59,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:59,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:59,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:59,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:14:59,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:14:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:59,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:59,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:59,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:14:59,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:59,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:14:59,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:59,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:59,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:59,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:59,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:59,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:14:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:59,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:59,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:59,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:14:59,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:59,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:14:59,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:59,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:59,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:59,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 09:14:59,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:14:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-13 09:14:59,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453757837] [2020-10-13 09:14:59,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:14:59,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:14:59,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591499653] [2020-10-13 09:14:59,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:14:59,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:14:59,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:14:59,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:14:59,450 INFO L87 Difference]: Start difference. First operand 2741 states and 3703 transitions. Second operand 5 states. [2020-10-13 09:15:03,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:15:03,465 INFO L93 Difference]: Finished difference Result 7526 states and 10441 transitions. [2020-10-13 09:15:03,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:15:03,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-10-13 09:15:03,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:15:03,494 INFO L225 Difference]: With dead ends: 7526 [2020-10-13 09:15:03,495 INFO L226 Difference]: Without dead ends: 4791 [2020-10-13 09:15:03,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:15:03,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4791 states. [2020-10-13 09:15:03,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4791 to 4787. [2020-10-13 09:15:03,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4787 states. [2020-10-13 09:15:03,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4787 states to 4787 states and 6236 transitions. [2020-10-13 09:15:03,631 INFO L78 Accepts]: Start accepts. Automaton has 4787 states and 6236 transitions. Word has length 197 [2020-10-13 09:15:03,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:15:03,632 INFO L479 AbstractCegarLoop]: Abstraction has 4787 states and 6236 transitions. [2020-10-13 09:15:03,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:15:03,632 INFO L276 IsEmpty]: Start isEmpty. Operand 4787 states and 6236 transitions. [2020-10-13 09:15:03,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-13 09:15:03,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:15:03,640 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:15:03,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:15:03,640 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:15:03,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:15:03,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1412190874, now seen corresponding path program 1 times [2020-10-13 09:15:03,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:15:03,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925359356] [2020-10-13 09:15:03,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:15:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:03,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:04,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:04,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:06,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:06,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:07,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:08,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:08,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:15:08,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:15:08,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 09:15:08,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:15:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 264 [2020-10-13 09:15:08,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 09:15:08,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:15:08,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:15:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:08,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:08,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:08,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:15:08,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:08,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:15:08,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:08,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:08,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:08,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:08,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:08,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:15:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:08,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:08,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:08,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:15:08,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:08,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:15:08,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:08,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:08,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:15:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:08,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:08,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:08,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:15:08,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:08,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:15:08,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:08,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:08,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:08,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:08,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:08,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-13 09:15:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:08,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:09,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:09,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:15:09,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:09,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:15:09,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:09,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:15:09,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:09,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:15:09,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:09,100 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 51 proven. 3 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-13 09:15:09,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925359356] [2020-10-13 09:15:09,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:15:09,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:15:09,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239940883] [2020-10-13 09:15:09,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:15:09,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:15:09,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:15:09,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:15:09,102 INFO L87 Difference]: Start difference. First operand 4787 states and 6236 transitions. Second operand 5 states. [2020-10-13 09:15:12,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:15:12,193 INFO L93 Difference]: Finished difference Result 9580 states and 12505 transitions. [2020-10-13 09:15:12,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:15:12,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 273 [2020-10-13 09:15:12,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:15:12,219 INFO L225 Difference]: With dead ends: 9580 [2020-10-13 09:15:12,220 INFO L226 Difference]: Without dead ends: 4791 [2020-10-13 09:15:12,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:15:12,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4791 states. [2020-10-13 09:15:12,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4791 to 4787. [2020-10-13 09:15:12,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4787 states. [2020-10-13 09:15:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4787 states to 4787 states and 6230 transitions. [2020-10-13 09:15:12,370 INFO L78 Accepts]: Start accepts. Automaton has 4787 states and 6230 transitions. Word has length 273 [2020-10-13 09:15:12,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:15:12,371 INFO L479 AbstractCegarLoop]: Abstraction has 4787 states and 6230 transitions. [2020-10-13 09:15:12,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:15:12,371 INFO L276 IsEmpty]: Start isEmpty. Operand 4787 states and 6230 transitions. [2020-10-13 09:15:12,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-13 09:15:12,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:15:12,380 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:15:12,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:15:12,381 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:15:12,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:15:12,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1842636011, now seen corresponding path program 1 times [2020-10-13 09:15:12,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:15:12,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056434217] [2020-10-13 09:15:12,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:15:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:12,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:12,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:12,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:13,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:15,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:15,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-13 09:15:15,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:15:15,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2837 [2020-10-13 09:15:15,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:15,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:15:15,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-13 09:15:15,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:15:15,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:15:15,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:15:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:15,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:15,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:15,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:15:15,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:15,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:15:15,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:15,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:15,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:15,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:15,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:15:15,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:15:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:15,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:15,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:15,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:15:15,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:15,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:15:15,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:15,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:15,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:15,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:15:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:15,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:15,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:15,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:15:15,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:15,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-13 09:15:15,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:15,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:15:15,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:15,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-13 09:15:15,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:15,796 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-13 09:15:15,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056434217] [2020-10-13 09:15:15,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:15:15,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:15:15,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794465503] [2020-10-13 09:15:15,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:15:15,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:15:15,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:15:15,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:15:15,801 INFO L87 Difference]: Start difference. First operand 4787 states and 6230 transitions. Second operand 5 states. [2020-10-13 09:15:20,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:15:20,342 INFO L93 Difference]: Finished difference Result 11609 states and 15644 transitions. [2020-10-13 09:15:20,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:15:20,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-13 09:15:20,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:15:20,375 INFO L225 Difference]: With dead ends: 11609 [2020-10-13 09:15:20,376 INFO L226 Difference]: Without dead ends: 6828 [2020-10-13 09:15:20,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:15:20,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6828 states. [2020-10-13 09:15:20,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6828 to 6824. [2020-10-13 09:15:20,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6824 states. [2020-10-13 09:15:20,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6824 states to 6824 states and 8797 transitions. [2020-10-13 09:15:20,558 INFO L78 Accepts]: Start accepts. Automaton has 6824 states and 8797 transitions. Word has length 312 [2020-10-13 09:15:20,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:15:20,559 INFO L479 AbstractCegarLoop]: Abstraction has 6824 states and 8797 transitions. [2020-10-13 09:15:20,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:15:20,559 INFO L276 IsEmpty]: Start isEmpty. Operand 6824 states and 8797 transitions. [2020-10-13 09:15:20,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-13 09:15:20,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:15:20,569 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:15:20,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:15:20,570 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:15:20,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:15:20,570 INFO L82 PathProgramCache]: Analyzing trace with hash -2105033009, now seen corresponding path program 1 times [2020-10-13 09:15:20,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:15:20,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207677666] [2020-10-13 09:15:20,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:15:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:20,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:20,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:21,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:21,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:21,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:24,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:24,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-13 09:15:24,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:15:24,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3855 [2020-10-13 09:15:24,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:24,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:15:24,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-13 09:15:24,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 09:15:24,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:24,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:15:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:24,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:24,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:24,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:15:24,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:24,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:15:24,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:24,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:24,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:24,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:24,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:24,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:15:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:24,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:24,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:24,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:15:24,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:24,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:15:24,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:24,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:24,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:15:24,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:15:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:24,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:24,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:24,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:15:24,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:24,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-13 09:15:24,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:24,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:15:24,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:24,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 09:15:24,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:15:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-13 09:15:25,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207677666] [2020-10-13 09:15:25,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:15:25,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:15:25,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959550891] [2020-10-13 09:15:25,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:15:25,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:15:25,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:15:25,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:15:25,234 INFO L87 Difference]: Start difference. First operand 6824 states and 8797 transitions. Second operand 5 states. [2020-10-13 09:15:28,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:15:28,217 INFO L93 Difference]: Finished difference Result 13658 states and 17643 transitions. [2020-10-13 09:15:28,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:15:28,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-13 09:15:28,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:15:28,245 INFO L225 Difference]: With dead ends: 13658 [2020-10-13 09:15:28,246 INFO L226 Difference]: Without dead ends: 6828 [2020-10-13 09:15:28,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:15:28,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6828 states. [2020-10-13 09:15:28,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6828 to 6824. [2020-10-13 09:15:28,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6824 states. [2020-10-13 09:15:28,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6824 states to 6824 states and 8785 transitions. [2020-10-13 09:15:28,400 INFO L78 Accepts]: Start accepts. Automaton has 6824 states and 8785 transitions. Word has length 314 [2020-10-13 09:15:28,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:15:28,401 INFO L479 AbstractCegarLoop]: Abstraction has 6824 states and 8785 transitions. [2020-10-13 09:15:28,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:15:28,402 INFO L276 IsEmpty]: Start isEmpty. Operand 6824 states and 8785 transitions. [2020-10-13 09:15:28,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-10-13 09:15:28,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:15:28,415 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:15:28,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:15:28,415 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:15:28,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:15:28,415 INFO L82 PathProgramCache]: Analyzing trace with hash -2007609278, now seen corresponding path program 1 times [2020-10-13 09:15:28,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:15:28,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746418194] [2020-10-13 09:15:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:15:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:28,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:28,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:29,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:29,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:30,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:30,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-13 09:15:30,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:15:30,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2256 [2020-10-13 09:15:30,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:30,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:15:30,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 362 [2020-10-13 09:15:30,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:15:30,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:30,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:15:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:30,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:30,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:30,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:15:30,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:30,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:15:30,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:30,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:30,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:30,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:30,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:15:30,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:15:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:30,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:30,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:30,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:15:30,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:30,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:15:30,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:30,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:15:30,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:15:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:30,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:31,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:31,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 09:15:31,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:31,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-13 09:15:31,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:31,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:15:31,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:31,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-10-13 09:15:31,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-13 09:15:31,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746418194] [2020-10-13 09:15:31,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:15:31,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:15:31,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751815852] [2020-10-13 09:15:31,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:15:31,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:15:31,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:15:31,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:15:31,446 INFO L87 Difference]: Start difference. First operand 6824 states and 8785 transitions. Second operand 5 states. [2020-10-13 09:15:35,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:15:35,054 INFO L93 Difference]: Finished difference Result 15344 states and 20204 transitions. [2020-10-13 09:15:35,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:15:35,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 373 [2020-10-13 09:15:35,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:15:35,102 INFO L225 Difference]: With dead ends: 15344 [2020-10-13 09:15:35,103 INFO L226 Difference]: Without dead ends: 8526 [2020-10-13 09:15:35,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:15:35,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8526 states. [2020-10-13 09:15:35,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8526 to 8522. [2020-10-13 09:15:35,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8522 states. [2020-10-13 09:15:35,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8522 states to 8522 states and 11044 transitions. [2020-10-13 09:15:35,292 INFO L78 Accepts]: Start accepts. Automaton has 8522 states and 11044 transitions. Word has length 373 [2020-10-13 09:15:35,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:15:35,293 INFO L479 AbstractCegarLoop]: Abstraction has 8522 states and 11044 transitions. [2020-10-13 09:15:35,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:15:35,294 INFO L276 IsEmpty]: Start isEmpty. Operand 8522 states and 11044 transitions. [2020-10-13 09:15:35,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2020-10-13 09:15:35,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:15:35,322 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:15:35,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:15:35,323 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:15:35,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:15:35,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1487190002, now seen corresponding path program 1 times [2020-10-13 09:15:35,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:15:35,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876452560] [2020-10-13 09:15:35,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:15:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:35,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:35,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:36,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:38,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:39,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:39,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:40,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:40,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:40,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 507 [2020-10-13 09:15:40,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:15:40,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-13 09:15:40,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:15:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-13 09:15:40,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 09:15:40,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:40,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:15:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:40,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:40,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:40,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:15:40,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:40,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:15:40,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:40,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:40,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:40,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:40,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:40,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:15:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:40,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:40,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:40,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:15:40,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:40,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:15:40,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:40,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:40,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:40,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:40,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:40,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:15:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:40,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:40,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:40,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:15:40,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:40,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:15:40,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:15:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:15:40,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:40,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-13 09:15:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:40,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:40,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:42,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:42,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 09:15:42,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:15:42,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1600 [2020-10-13 09:15:42,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:42,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:15:42,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:15:42,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-13 09:15:42,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:42,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:15:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:42,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:42,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:42,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 09:15:42,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:42,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:15:42,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:42,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:15:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 09:15:42,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:15:43,665 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:15:43,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876452560] [2020-10-13 09:15:43,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:15:43,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:15:43,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627568855] [2020-10-13 09:15:43,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:15:43,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:15:43,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:15:43,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:15:43,669 INFO L87 Difference]: Start difference. First operand 8522 states and 11044 transitions. Second operand 10 states. [2020-10-13 09:15:49,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:15:49,043 INFO L93 Difference]: Finished difference Result 17299 states and 22540 transitions. [2020-10-13 09:15:49,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 09:15:49,044 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 491 [2020-10-13 09:15:49,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:15:49,073 INFO L225 Difference]: With dead ends: 17299 [2020-10-13 09:15:49,073 INFO L226 Difference]: Without dead ends: 8699 [2020-10-13 09:15:49,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2020-10-13 09:15:49,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8699 states. [2020-10-13 09:15:49,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8699 to 8549. [2020-10-13 09:15:49,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8549 states. [2020-10-13 09:15:49,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8549 states to 8549 states and 11099 transitions. [2020-10-13 09:15:49,266 INFO L78 Accepts]: Start accepts. Automaton has 8549 states and 11099 transitions. Word has length 491 [2020-10-13 09:15:49,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:15:49,267 INFO L479 AbstractCegarLoop]: Abstraction has 8549 states and 11099 transitions. [2020-10-13 09:15:49,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:15:49,267 INFO L276 IsEmpty]: Start isEmpty. Operand 8549 states and 11099 transitions. [2020-10-13 09:15:49,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-10-13 09:15:49,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:15:49,305 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:15:49,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:15:49,306 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:15:49,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:15:49,306 INFO L82 PathProgramCache]: Analyzing trace with hash 273369663, now seen corresponding path program 1 times [2020-10-13 09:15:49,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:15:49,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903548596] [2020-10-13 09:15:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:15:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:49,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:49,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:49,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:51,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:52,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:54,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:54,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-10-13 09:15:54,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:15:54,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 09:15:54,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:15:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 09:15:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:15:54,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:54,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:15:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:54,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:54,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:54,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:15:54,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:54,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:15:54,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:54,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:54,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:54,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:54,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:54,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:15:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:54,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:54,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:54,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:15:54,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:54,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:15:54,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:54,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:15:54,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:54,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:15:54,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:54,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:15:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:54,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:54,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:54,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:54,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:15:54,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:15:54,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:15:54,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:54,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:15:54,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:15:54,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:15:54,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:54,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-13 09:15:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:54,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:54,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:54,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 09:15:54,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:54,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 09:15:54,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:54,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:54,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 305 [2020-10-13 09:15:54,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:54,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:54,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:15:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:54,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:54,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:54,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 09:15:54,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:54,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:15:54,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:54,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:54,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:54,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:54,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:55,223 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 132 proven. 82 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-13 09:15:55,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903548596] [2020-10-13 09:15:55,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:15:55,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:15:55,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851607426] [2020-10-13 09:15:55,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:15:55,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:15:55,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:15:55,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:15:55,225 INFO L87 Difference]: Start difference. First operand 8549 states and 11099 transitions. Second operand 6 states. [2020-10-13 09:15:59,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:15:59,070 INFO L93 Difference]: Finished difference Result 17223 states and 22409 transitions. [2020-10-13 09:15:59,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:15:59,071 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 502 [2020-10-13 09:15:59,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:15:59,099 INFO L225 Difference]: With dead ends: 17223 [2020-10-13 09:15:59,099 INFO L226 Difference]: Without dead ends: 8611 [2020-10-13 09:15:59,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:15:59,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8611 states. [2020-10-13 09:15:59,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8611 to 8549. [2020-10-13 09:15:59,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8549 states. [2020-10-13 09:15:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8549 states to 8549 states and 10665 transitions. [2020-10-13 09:15:59,337 INFO L78 Accepts]: Start accepts. Automaton has 8549 states and 10665 transitions. Word has length 502 [2020-10-13 09:15:59,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:15:59,338 INFO L479 AbstractCegarLoop]: Abstraction has 8549 states and 10665 transitions. [2020-10-13 09:15:59,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:15:59,338 INFO L276 IsEmpty]: Start isEmpty. Operand 8549 states and 10665 transitions. [2020-10-13 09:15:59,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2020-10-13 09:15:59,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:15:59,384 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:15:59,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:15:59,384 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:15:59,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:15:59,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1518484486, now seen corresponding path program 1 times [2020-10-13 09:15:59,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:15:59,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50094731] [2020-10-13 09:15:59,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:15:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:59,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:59,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:01,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:02,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:04,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:04,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 573 [2020-10-13 09:16:04,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:16:04,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 09:16:04,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:04,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:16:04,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:16:04,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:16:04,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:16:04,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:16:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:04,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:04,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:04,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:16:04,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:04,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:16:04,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:04,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:16:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:16:04,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:16:04,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:16:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:04,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:04,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:04,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:16:04,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:04,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 09:16:04,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:16:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 09:16:04,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:16:04,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 09:16:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:04,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:04,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:04,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:16:04,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:04,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:16:04,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:04,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:04,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 09:16:04,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:04,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:04,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-13 09:16:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:05,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:05,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:05,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 09:16:05,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:05,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-13 09:16:05,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:05,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:05,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 305 [2020-10-13 09:16:05,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:05,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:05,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:16:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:05,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:05,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:05,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 09:16:05,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:05,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:16:05,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:05,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 48 proven. 190 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-10-13 09:16:05,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50094731] [2020-10-13 09:16:05,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:16:05,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:16:05,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231683783] [2020-10-13 09:16:05,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:16:05,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:16:05,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:16:05,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:16:05,395 INFO L87 Difference]: Start difference. First operand 8549 states and 10665 transitions. Second operand 7 states. [2020-10-13 09:16:10,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:16:10,342 INFO L93 Difference]: Finished difference Result 24279 states and 30684 transitions. [2020-10-13 09:16:10,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:16:10,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 557 [2020-10-13 09:16:10,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:16:10,399 INFO L225 Difference]: With dead ends: 24279 [2020-10-13 09:16:10,399 INFO L226 Difference]: Without dead ends: 15736 [2020-10-13 09:16:10,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:16:10,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15736 states. [2020-10-13 09:16:10,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15736 to 15732. [2020-10-13 09:16:10,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15732 states. [2020-10-13 09:16:10,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15732 states to 15732 states and 19609 transitions. [2020-10-13 09:16:10,770 INFO L78 Accepts]: Start accepts. Automaton has 15732 states and 19609 transitions. Word has length 557 [2020-10-13 09:16:10,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:16:10,771 INFO L479 AbstractCegarLoop]: Abstraction has 15732 states and 19609 transitions. [2020-10-13 09:16:10,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:16:10,771 INFO L276 IsEmpty]: Start isEmpty. Operand 15732 states and 19609 transitions. [2020-10-13 09:16:10,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2020-10-13 09:16:10,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:10,820 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:16:10,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:16:10,821 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:10,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:10,821 INFO L82 PathProgramCache]: Analyzing trace with hash 996151590, now seen corresponding path program 1 times [2020-10-13 09:16:10,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:10,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742526932] [2020-10-13 09:16:10,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:10,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:11,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:11,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:13,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:14,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:14,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:15,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:15,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 593 [2020-10-13 09:16:15,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:16:15,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 09:16:15,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-13 09:16:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:16:15,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:16,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:16:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:16,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:16,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:16,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:16:16,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:16,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:16:16,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:16,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:16,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:16,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:16,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:16,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:16:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:16,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:16,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:16,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 09:16:16,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:16,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:16:16,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:16,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:16:16,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:16,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-13 09:16:16,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:16,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-13 09:16:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:16,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:16,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:16,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:16,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:16:16,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:16:16,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:16:16,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:16,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:16,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:16:16,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:16:16,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:16,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:16:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:16,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:16,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:16,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 09:16:16,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:16,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-13 09:16:16,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:16,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:16,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 305 [2020-10-13 09:16:16,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:16,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:16,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:16:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:16,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:16,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:16,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 09:16:16,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:16,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:16:16,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:16,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:16,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:16,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:16,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:16,818 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 132 proven. 82 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-10-13 09:16:16,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742526932] [2020-10-13 09:16:16,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:16:16,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:16:16,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672074621] [2020-10-13 09:16:16,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:16:16,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:16:16,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:16:16,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:16:16,821 INFO L87 Difference]: Start difference. First operand 15732 states and 19609 transitions. Second operand 7 states. [2020-10-13 09:16:20,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:16:20,156 INFO L93 Difference]: Finished difference Result 31634 states and 42409 transitions. [2020-10-13 09:16:20,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:16:20,157 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 577 [2020-10-13 09:16:20,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:16:20,226 INFO L225 Difference]: With dead ends: 31634 [2020-10-13 09:16:20,226 INFO L226 Difference]: Without dead ends: 16156 [2020-10-13 09:16:20,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:16:20,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16156 states. [2020-10-13 09:16:20,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16156 to 15740. [2020-10-13 09:16:20,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15740 states. [2020-10-13 09:16:20,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15740 states to 15740 states and 18708 transitions. [2020-10-13 09:16:20,849 INFO L78 Accepts]: Start accepts. Automaton has 15740 states and 18708 transitions. Word has length 577 [2020-10-13 09:16:20,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:16:20,850 INFO L479 AbstractCegarLoop]: Abstraction has 15740 states and 18708 transitions. [2020-10-13 09:16:20,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:16:20,851 INFO L276 IsEmpty]: Start isEmpty. Operand 15740 states and 18708 transitions. [2020-10-13 09:16:20,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2020-10-13 09:16:20,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:20,885 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:16:20,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:16:20,885 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:20,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:20,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1609151322, now seen corresponding path program 1 times [2020-10-13 09:16:20,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:20,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459261765] [2020-10-13 09:16:20,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:21,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:21,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:21,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:22,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:26,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:26,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 591 [2020-10-13 09:16:26,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:16:26,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 09:16:26,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 09:16:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:16:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-13 09:16:26,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:26,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:16:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:26,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:26,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:26,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:16:26,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:26,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:16:26,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:26,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:16:26,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:26,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:16:26,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:26,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:16:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:26,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:26,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:26,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:26,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:16:26,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:16:26,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-10-13 09:16:26,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:26,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 09:16:26,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:16:26,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-13 09:16:26,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:27,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:16:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:28,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:28,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:28,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 09:16:28,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:28,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 09:16:28,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:28,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:28,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 305 [2020-10-13 09:16:28,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:28,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:28,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:16:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:28,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:28,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:28,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 09:16:28,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:28,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:16:28,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:28,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 32 proven. 244 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:16:29,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459261765] [2020-10-13 09:16:29,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:16:29,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 09:16:29,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955976660] [2020-10-13 09:16:29,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 09:16:29,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:16:29,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 09:16:29,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:16:29,674 INFO L87 Difference]: Start difference. First operand 15740 states and 18708 transitions. Second operand 13 states. [2020-10-13 09:16:30,485 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-10-13 09:16:30,914 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2020-10-13 09:16:31,230 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2020-10-13 09:16:31,640 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2020-10-13 09:16:32,048 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-10-13 09:16:32,323 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 61 [2020-10-13 09:16:33,096 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-13 09:16:33,430 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-13 09:16:33,657 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-13 09:16:33,986 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-10-13 09:16:34,336 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-10-13 09:16:34,582 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2020-10-13 09:16:35,775 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-13 09:16:36,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:16:36,505 INFO L93 Difference]: Finished difference Result 31473 states and 37409 transitions. [2020-10-13 09:16:36,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 09:16:36,506 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 577 [2020-10-13 09:16:36,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:16:36,548 INFO L225 Difference]: With dead ends: 31473 [2020-10-13 09:16:36,548 INFO L226 Difference]: Without dead ends: 15647 [2020-10-13 09:16:36,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=254, Invalid=616, Unknown=0, NotChecked=0, Total=870 [2020-10-13 09:16:36,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15647 states. [2020-10-13 09:16:36,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15647 to 15647. [2020-10-13 09:16:36,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15647 states. [2020-10-13 09:16:36,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15647 states to 15647 states and 18610 transitions. [2020-10-13 09:16:36,826 INFO L78 Accepts]: Start accepts. Automaton has 15647 states and 18610 transitions. Word has length 577 [2020-10-13 09:16:36,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:16:36,827 INFO L479 AbstractCegarLoop]: Abstraction has 15647 states and 18610 transitions. [2020-10-13 09:16:36,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 09:16:36,827 INFO L276 IsEmpty]: Start isEmpty. Operand 15647 states and 18610 transitions. [2020-10-13 09:16:36,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2020-10-13 09:16:36,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:36,861 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:16:36,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:16:36,862 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:36,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:36,862 INFO L82 PathProgramCache]: Analyzing trace with hash 591213623, now seen corresponding path program 1 times [2020-10-13 09:16:36,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:36,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015491770] [2020-10-13 09:16:36,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:37,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:37,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:37,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:38,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:40,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:42,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:42,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 822 [2020-10-13 09:16:42,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:16:42,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 09:16:42,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:42,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:42,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-13 09:16:42,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 09:16:42,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:42,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:16:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:42,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:42,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:42,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:16:42,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:42,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:16:42,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:42,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:42,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:16:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:42,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:42,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:42,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:16:42,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:42,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:16:42,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:42,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:42,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:42,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:42,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:42,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:16:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:42,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:42,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:42,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:16:42,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:42,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:16:42,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:16:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 09:16:42,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:42,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-13 09:16:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:42,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:42,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:42,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:16:42,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:42,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:16:42,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:16:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:16:42,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:42,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-13 09:16:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:42,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:42,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:42,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 09:16:42,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:42,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 09:16:42,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:42,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:42,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 305 [2020-10-13 09:16:42,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:42,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:42,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:16:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:42,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:42,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:42,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 09:16:42,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:42,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:16:42,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:42,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:42,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:42,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:42,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 300 proven. 128 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2020-10-13 09:16:43,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015491770] [2020-10-13 09:16:43,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:16:43,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:16:43,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945468501] [2020-10-13 09:16:43,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:16:43,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:16:43,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:16:43,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:16:43,071 INFO L87 Difference]: Start difference. First operand 15647 states and 18610 transitions. Second operand 7 states. [2020-10-13 09:16:46,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:16:46,633 INFO L93 Difference]: Finished difference Result 31126 states and 37316 transitions. [2020-10-13 09:16:46,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:16:46,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 804 [2020-10-13 09:16:46,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:16:46,677 INFO L225 Difference]: With dead ends: 31126 [2020-10-13 09:16:46,678 INFO L226 Difference]: Without dead ends: 15729 [2020-10-13 09:16:46,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:16:46,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15729 states. [2020-10-13 09:16:46,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15729 to 15693. [2020-10-13 09:16:46,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15693 states. [2020-10-13 09:16:46,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15693 states to 15693 states and 18424 transitions. [2020-10-13 09:16:46,980 INFO L78 Accepts]: Start accepts. Automaton has 15693 states and 18424 transitions. Word has length 804 [2020-10-13 09:16:46,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:16:46,981 INFO L479 AbstractCegarLoop]: Abstraction has 15693 states and 18424 transitions. [2020-10-13 09:16:46,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:16:46,981 INFO L276 IsEmpty]: Start isEmpty. Operand 15693 states and 18424 transitions. [2020-10-13 09:16:47,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2020-10-13 09:16:47,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:47,005 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:16:47,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:16:47,006 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:47,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:47,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1223156869, now seen corresponding path program 1 times [2020-10-13 09:16:47,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:47,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039493650] [2020-10-13 09:16:47,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:47,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:47,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:48,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:52,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:52,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 832 [2020-10-13 09:16:52,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:16:52,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-13 09:16:52,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:52,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:52,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-13 09:16:52,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-13 09:16:52,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:52,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:16:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:52,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:52,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:52,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:16:52,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:52,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:16:52,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:52,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:52,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:52,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:52,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:52,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:16:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:52,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:52,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:52,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:16:52,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:52,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 09:16:52,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:52,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:16:52,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:52,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-13 09:16:52,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:52,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:16:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:52,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:52,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:52,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:16:52,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:52,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-13 09:16:52,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:52,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:52,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:16:52,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-13 09:16:52,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:52,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-13 09:16:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:52,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:52,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:52,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 09:16:52,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:52,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:16:52,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:52,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:52,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 305 [2020-10-13 09:16:52,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:52,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:53,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:16:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:53,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:53,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:53,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 09:16:53,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:53,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:16:53,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:53,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:53,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:53,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:53,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 288 proven. 248 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2020-10-13 09:16:53,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039493650] [2020-10-13 09:16:53,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:16:53,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:16:53,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364996296] [2020-10-13 09:16:53,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:16:53,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:16:53,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:16:53,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:16:53,576 INFO L87 Difference]: Start difference. First operand 15693 states and 18424 transitions. Second operand 7 states. [2020-10-13 09:16:58,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:16:58,011 INFO L93 Difference]: Finished difference Result 37236 states and 43833 transitions. [2020-10-13 09:16:58,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:16:58,013 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 816 [2020-10-13 09:16:58,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:16:58,054 INFO L225 Difference]: With dead ends: 37236 [2020-10-13 09:16:58,054 INFO L226 Difference]: Without dead ends: 21793 [2020-10-13 09:16:58,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:16:58,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21793 states. [2020-10-13 09:16:58,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21793 to 20441. [2020-10-13 09:16:58,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20441 states. [2020-10-13 09:16:58,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20441 states to 20441 states and 23501 transitions. [2020-10-13 09:16:58,406 INFO L78 Accepts]: Start accepts. Automaton has 20441 states and 23501 transitions. Word has length 816 [2020-10-13 09:16:58,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:16:58,407 INFO L479 AbstractCegarLoop]: Abstraction has 20441 states and 23501 transitions. [2020-10-13 09:16:58,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:16:58,407 INFO L276 IsEmpty]: Start isEmpty. Operand 20441 states and 23501 transitions. [2020-10-13 09:16:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2020-10-13 09:16:58,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:58,422 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:16:58,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:16:58,422 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:58,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:58,423 INFO L82 PathProgramCache]: Analyzing trace with hash 515877131, now seen corresponding path program 1 times [2020-10-13 09:16:58,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:58,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751773094] [2020-10-13 09:16:58,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:58,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:58,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:59,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:59,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:01,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:03,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:03,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 840 [2020-10-13 09:17:03,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:17:03,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 09:17:03,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:03,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:03,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 09:17:03,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-13 09:17:03,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:03,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:03,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:03,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:03,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:03,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:03,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:17:03,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:03,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:03,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:03,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:03,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:03,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:03,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:03,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:03,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:17:03,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:03,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 09:17:03,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:03,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:03,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:03,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-13 09:17:03,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:04,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:17:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:04,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:04,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:04,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:17:04,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:04,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-13 09:17:04,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:04,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:04,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:17:04,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-13 09:17:04,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:04,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:17:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:04,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:04,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:04,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 09:17:04,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:17:04,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 305 [2020-10-13 09:17:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:04,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:04,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:17:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:04,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:04,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:04,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 09:17:04,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:04,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:17:04,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:04,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:04,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:04,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:04,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 296 proven. 248 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-10-13 09:17:05,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751773094] [2020-10-13 09:17:05,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:05,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:17:05,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592796773] [2020-10-13 09:17:05,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:17:05,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:05,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:17:05,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:17:05,185 INFO L87 Difference]: Start difference. First operand 20441 states and 23501 transitions. Second operand 8 states. [2020-10-13 09:17:09,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:09,347 INFO L93 Difference]: Finished difference Result 40642 states and 46771 transitions. [2020-10-13 09:17:09,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:17:09,349 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 824 [2020-10-13 09:17:09,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:09,390 INFO L225 Difference]: With dead ends: 40642 [2020-10-13 09:17:09,391 INFO L226 Difference]: Without dead ends: 20451 [2020-10-13 09:17:09,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:17:09,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20451 states. [2020-10-13 09:17:09,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20451 to 20451. [2020-10-13 09:17:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20451 states. [2020-10-13 09:17:09,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20451 states to 20451 states and 23515 transitions. [2020-10-13 09:17:09,690 INFO L78 Accepts]: Start accepts. Automaton has 20451 states and 23515 transitions. Word has length 824 [2020-10-13 09:17:09,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:09,690 INFO L479 AbstractCegarLoop]: Abstraction has 20451 states and 23515 transitions. [2020-10-13 09:17:09,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:17:09,691 INFO L276 IsEmpty]: Start isEmpty. Operand 20451 states and 23515 transitions. [2020-10-13 09:17:09,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2020-10-13 09:17:09,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:09,705 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:17:09,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:17:09,705 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:09,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:09,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1277243850, now seen corresponding path program 1 times [2020-10-13 09:17:09,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:09,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542741621] [2020-10-13 09:17:09,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:09,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:09,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:10,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:10,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:11,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:13,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:14,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:14,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 851 [2020-10-13 09:17:14,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:17:14,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-13 09:17:14,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:14,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:17:14,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 434 [2020-10-13 09:17:14,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:17:14,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:14,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:14,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:14,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:14,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:14,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:14,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:17:14,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:14,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:14,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:14,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:14,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:14,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:14,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:15,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:15,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:17:15,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:15,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-13 09:17:15,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:15,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:15,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:17:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:15,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:15,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:15,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 09:17:15,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:15,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 09:17:15,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:15,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:15,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:15,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-13 09:17:15,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:15,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-10-13 09:17:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:15,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:15,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:15,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:15,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:17:15,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:17:15,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 09:17:15,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:15,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:17:15,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:17:15,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:17:15,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:15,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2020-10-13 09:17:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:15,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:15,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:15,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 09:17:15,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:15,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:17:15,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:15,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 305 [2020-10-13 09:17:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:15,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:15,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:17:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:15,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:15,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:15,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 09:17:15,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:15,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:17:15,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:15,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:15,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:15,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:15,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 237 proven. 82 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2020-10-13 09:17:16,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542741621] [2020-10-13 09:17:16,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:16,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:17:16,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235135743] [2020-10-13 09:17:16,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:17:16,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:16,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:17:16,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:17:16,414 INFO L87 Difference]: Start difference. First operand 20451 states and 23515 transitions. Second operand 10 states. [2020-10-13 09:17:18,647 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-10-13 09:17:18,784 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-10-13 09:17:20,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:20,764 INFO L93 Difference]: Finished difference Result 39866 states and 45951 transitions. [2020-10-13 09:17:20,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 09:17:20,765 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 833 [2020-10-13 09:17:20,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:20,809 INFO L225 Difference]: With dead ends: 39866 [2020-10-13 09:17:20,809 INFO L226 Difference]: Without dead ends: 19328 [2020-10-13 09:17:20,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-10-13 09:17:20,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19328 states. [2020-10-13 09:17:21,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19328 to 18692. [2020-10-13 09:17:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18692 states. [2020-10-13 09:17:21,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18692 states to 18692 states and 21216 transitions. [2020-10-13 09:17:21,128 INFO L78 Accepts]: Start accepts. Automaton has 18692 states and 21216 transitions. Word has length 833 [2020-10-13 09:17:21,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:21,129 INFO L479 AbstractCegarLoop]: Abstraction has 18692 states and 21216 transitions. [2020-10-13 09:17:21,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:17:21,129 INFO L276 IsEmpty]: Start isEmpty. Operand 18692 states and 21216 transitions. [2020-10-13 09:17:21,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2020-10-13 09:17:21,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:21,149 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:17:21,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:17:21,149 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:21,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:21,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1043919805, now seen corresponding path program 1 times [2020-10-13 09:17:21,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:21,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281392233] [2020-10-13 09:17:21,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:21,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:21,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:22,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:22,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:24,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:26,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:26,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 876 [2020-10-13 09:17:26,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:17:26,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 09:17:26,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:26,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:26,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-13 09:17:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-13 09:17:26,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:26,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:26,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:26,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:26,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:26,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:26,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:17:26,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:26,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:26,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:26,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:26,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:26,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:26,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:17:26,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:26,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 09:17:26,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-13 09:17:26,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:26,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:17:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:26,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:26,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:26,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:17:26,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:26,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 09:17:26,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:26,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:26,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:17:26,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 09:17:26,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:26,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:17:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:26,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:27,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:27,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:17:27,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:27,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:17:27,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:27,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:27,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 09:17:27,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:27,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:27,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:17:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:27,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:27,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:27,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 09:17:27,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:27,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 09:17:27,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 305 [2020-10-13 09:17:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:27,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:27,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:17:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:27,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:27,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:27,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 09:17:27,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:27,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:17:27,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:27,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:27,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:27,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:27,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:27,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1014 backedges. 231 proven. 287 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2020-10-13 09:17:27,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281392233] [2020-10-13 09:17:27,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:27,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:17:27,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569092304] [2020-10-13 09:17:27,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:17:27,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:27,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:17:27,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:17:27,770 INFO L87 Difference]: Start difference. First operand 18692 states and 21216 transitions. Second operand 7 states. [2020-10-13 09:17:32,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:32,259 INFO L93 Difference]: Finished difference Result 37477 states and 42562 transitions. [2020-10-13 09:17:32,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:17:32,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 858 [2020-10-13 09:17:32,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:32,288 INFO L225 Difference]: With dead ends: 37477 [2020-10-13 09:17:32,288 INFO L226 Difference]: Without dead ends: 19035 [2020-10-13 09:17:32,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:17:32,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19035 states. [2020-10-13 09:17:32,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19035 to 18361. [2020-10-13 09:17:32,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18361 states. [2020-10-13 09:17:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18361 states to 18361 states and 20699 transitions. [2020-10-13 09:17:32,564 INFO L78 Accepts]: Start accepts. Automaton has 18361 states and 20699 transitions. Word has length 858 [2020-10-13 09:17:32,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:32,565 INFO L479 AbstractCegarLoop]: Abstraction has 18361 states and 20699 transitions. [2020-10-13 09:17:32,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:17:32,565 INFO L276 IsEmpty]: Start isEmpty. Operand 18361 states and 20699 transitions. [2020-10-13 09:17:32,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2020-10-13 09:17:32,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:32,580 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:17:32,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:17:32,581 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:32,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:32,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1913924214, now seen corresponding path program 1 times [2020-10-13 09:17:32,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:32,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585883052] [2020-10-13 09:17:32,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:32,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:32,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:33,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:33,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:35,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:37,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:37,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:37,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 937 [2020-10-13 09:17:37,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:17:37,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5138 [2020-10-13 09:17:37,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-13 09:17:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 09:17:37,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:37,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:37,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:37,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:37,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:37,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:37,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:17:37,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:37,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:37,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:37,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:37,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:37,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:37,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:17:37,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:37,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 09:17:37,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:37,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:38,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:17:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:38,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:38,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:38,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-13 09:17:38,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:38,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 09:17:38,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:38,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:38,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:38,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-13 09:17:38,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:38,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-13 09:17:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:38,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:38,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:38,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:17:38,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:38,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:17:38,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:38,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:38,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:17:38,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:17:38,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:38,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-13 09:17:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:38,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:38,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:38,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 09:17:38,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:38,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 09:17:38,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:38,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:38,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 305 [2020-10-13 09:17:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:38,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:38,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:17:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:38,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:38,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:38,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 09:17:38,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:38,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:17:38,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:38,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:38,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:38,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:38,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 329 proven. 128 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2020-10-13 09:17:39,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585883052] [2020-10-13 09:17:39,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:39,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:17:39,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16777191] [2020-10-13 09:17:39,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:17:39,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:39,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:17:39,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:17:39,129 INFO L87 Difference]: Start difference. First operand 18361 states and 20699 transitions. Second operand 7 states. [2020-10-13 09:17:43,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:43,017 INFO L93 Difference]: Finished difference Result 36813 states and 41507 transitions. [2020-10-13 09:17:43,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:17:43,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 919 [2020-10-13 09:17:43,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:43,049 INFO L225 Difference]: With dead ends: 36813 [2020-10-13 09:17:43,049 INFO L226 Difference]: Without dead ends: 18702 [2020-10-13 09:17:43,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:17:43,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18702 states. [2020-10-13 09:17:43,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18702 to 18702. [2020-10-13 09:17:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18702 states. [2020-10-13 09:17:43,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18702 states to 18702 states and 21055 transitions. [2020-10-13 09:17:43,319 INFO L78 Accepts]: Start accepts. Automaton has 18702 states and 21055 transitions. Word has length 919 [2020-10-13 09:17:43,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:43,320 INFO L479 AbstractCegarLoop]: Abstraction has 18702 states and 21055 transitions. [2020-10-13 09:17:43,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:17:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 18702 states and 21055 transitions. [2020-10-13 09:17:43,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2020-10-13 09:17:43,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:43,353 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:17:43,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 09:17:43,354 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:43,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:43,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1285460690, now seen corresponding path program 1 times [2020-10-13 09:17:43,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:43,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289288640] [2020-10-13 09:17:43,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:43,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:44,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:44,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:45,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:46,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:48,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:48,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:48,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 939 [2020-10-13 09:17:48,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:17:48,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-13 09:17:48,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:48,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:48,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-13 09:17:48,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 09:17:48,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:48,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:48,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:48,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:48,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:48,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:48,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:17:48,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:48,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:48,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:48,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:48,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:48,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:48,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:48,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:48,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:17:48,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:48,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:17:48,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:48,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:48,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:48,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:48,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:48,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:17:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:48,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:48,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:48,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-13 09:17:48,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:48,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:17:48,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:48,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:48,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:48,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-13 09:17:48,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:49,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-13 09:17:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:49,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:49,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:49,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:17:49,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:49,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 09:17:49,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:49,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:49,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:17:49,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:17:49,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:49,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-13 09:17:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:49,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:49,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:49,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 09:17:49,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 09:17:49,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 305 [2020-10-13 09:17:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:49,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:49,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:17:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:49,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:49,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:49,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 09:17:49,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:49,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:17:49,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:49,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:49,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:49,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:49,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:49,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 329 proven. 128 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2020-10-13 09:17:49,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289288640] [2020-10-13 09:17:49,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:49,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:17:49,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598012318] [2020-10-13 09:17:49,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:17:49,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:49,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:17:49,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:17:49,996 INFO L87 Difference]: Start difference. First operand 18702 states and 21055 transitions. Second operand 7 states. [2020-10-13 09:17:54,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:54,088 INFO L93 Difference]: Finished difference Result 39178 states and 44065 transitions. [2020-10-13 09:17:54,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:17:54,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 921 [2020-10-13 09:17:54,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:54,119 INFO L225 Difference]: With dead ends: 39178 [2020-10-13 09:17:54,119 INFO L226 Difference]: Without dead ends: 20726 [2020-10-13 09:17:54,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:17:54,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20726 states. [2020-10-13 09:17:54,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20726 to 20726. [2020-10-13 09:17:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20726 states. [2020-10-13 09:17:54,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20726 states to 20726 states and 23012 transitions. [2020-10-13 09:17:54,349 INFO L78 Accepts]: Start accepts. Automaton has 20726 states and 23012 transitions. Word has length 921 [2020-10-13 09:17:54,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:54,350 INFO L479 AbstractCegarLoop]: Abstraction has 20726 states and 23012 transitions. [2020-10-13 09:17:54,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:17:54,351 INFO L276 IsEmpty]: Start isEmpty. Operand 20726 states and 23012 transitions. [2020-10-13 09:17:54,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2020-10-13 09:17:54,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:54,369 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:17:54,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 09:17:54,370 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:54,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:54,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1551559158, now seen corresponding path program 1 times [2020-10-13 09:17:54,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:54,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142634754] [2020-10-13 09:17:54,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:54,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:55,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:55,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:59,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:59,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 973 [2020-10-13 09:17:59,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:17:59,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 09:17:59,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:17:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-13 09:17:59,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 307 [2020-10-13 09:17:59,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:59,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:59,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:59,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:59,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:59,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:59,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:17:59,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:59,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:59,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:59,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:59,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:59,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:59,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:59,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:59,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:17:59,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:59,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:17:59,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:59,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:59,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:59,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:59,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:59,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:17:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:59,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:59,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:59,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-13 09:17:59,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:59,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 09:17:59,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:59,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:59,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:59,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:59,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:59,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-13 09:17:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:59,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:59,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:59,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 09:17:59,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:59,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 09:17:59,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:59,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:59,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:59,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-13 09:17:59,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:59,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-13 09:17:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:00,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:00,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:00,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 09:18:00,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:00,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-13 09:18:00,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:00,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:18:00,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:00,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-13 09:18:00,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:00,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:18:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:00,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:00,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:00,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 09:18:00,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:00,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:18:00,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:00,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:18:00,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:00,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 09:18:00,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 692 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2020-10-13 09:18:01,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142634754] [2020-10-13 09:18:01,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:01,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:18:01,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228483788] [2020-10-13 09:18:01,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:18:01,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:01,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:18:01,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:18:01,034 INFO L87 Difference]: Start difference. First operand 20726 states and 23012 transitions. Second operand 8 states. [2020-10-13 09:18:05,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:05,740 INFO L93 Difference]: Finished difference Result 42582 states and 47328 transitions. [2020-10-13 09:18:05,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 09:18:05,741 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 955 [2020-10-13 09:18:05,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:05,773 INFO L225 Difference]: With dead ends: 42582 [2020-10-13 09:18:05,773 INFO L226 Difference]: Without dead ends: 22106 [2020-10-13 09:18:05,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-13 09:18:05,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22106 states. [2020-10-13 09:18:05,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22106 to 22078. [2020-10-13 09:18:05,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22078 states. [2020-10-13 09:18:05,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22078 states to 22078 states and 24145 transitions. [2020-10-13 09:18:05,996 INFO L78 Accepts]: Start accepts. Automaton has 22078 states and 24145 transitions. Word has length 955 [2020-10-13 09:18:05,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:05,998 INFO L479 AbstractCegarLoop]: Abstraction has 22078 states and 24145 transitions. [2020-10-13 09:18:05,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:18:05,998 INFO L276 IsEmpty]: Start isEmpty. Operand 22078 states and 24145 transitions. [2020-10-13 09:18:06,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1152 [2020-10-13 09:18:06,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:06,018 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:18:06,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 09:18:06,018 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:06,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:06,019 INFO L82 PathProgramCache]: Analyzing trace with hash 440097958, now seen corresponding path program 1 times [2020-10-13 09:18:06,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:06,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456714269] [2020-10-13 09:18:06,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:06,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:06,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:09,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking...