/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/Problem03_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:20:58,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:20:58,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:20:58,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:20:58,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:20:58,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:20:58,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:20:58,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:20:58,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:20:58,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:20:58,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:20:58,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:20:58,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:20:58,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:20:58,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:20:58,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:20:58,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:20:58,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:20:58,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:20:58,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:20:58,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:20:58,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:20:58,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:20:58,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:20:58,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:20:58,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:20:58,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:20:58,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:20:58,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:20:58,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:20:58,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:20:58,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:20:58,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:20:58,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:20:58,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:20:58,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:20:58,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:20:58,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:20:58,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:20:58,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:20:58,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:20:58,866 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 06:20:58,904 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:20:58,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:20:58,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:20:58,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:20:58,908 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:20:58,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:20:58,908 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:20:58,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:20:58,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:20:58,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:20:58,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:20:58,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:20:58,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:20:58,911 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:20:58,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:20:58,911 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:20:58,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:20:58,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:20:58,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:20:58,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:20:58,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:20:58,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:20:58,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:20:58,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:20:58,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:20:58,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:20:58,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:20:58,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:20:58,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:20:58,914 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 06:20:59,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:20:59,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:20:59,271 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:20:59,274 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:20:59,274 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:20:59,275 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label28.c [2020-10-13 06:20:59,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6cc049ab/4aad115c4afa4ac28399e07431afc576/FLAGfe21db1d5 [2020-10-13 06:20:59,944 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:20:59,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label28.c [2020-10-13 06:20:59,961 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6cc049ab/4aad115c4afa4ac28399e07431afc576/FLAGfe21db1d5 [2020-10-13 06:21:00,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6cc049ab/4aad115c4afa4ac28399e07431afc576 [2020-10-13 06:21:00,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:21:00,173 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:21:00,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:21:00,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:21:00,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:21:00,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:21:00" (1/1) ... [2020-10-13 06:21:00,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@593f1449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:00, skipping insertion in model container [2020-10-13 06:21:00,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:21:00" (1/1) ... [2020-10-13 06:21:00,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:21:00,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:21:01,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:21:01,270 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:21:01,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:21:01,499 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:21:01,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:01 WrapperNode [2020-10-13 06:21:01,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:21:01,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:21:01,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:21:01,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:21:01,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:01" (1/1) ... [2020-10-13 06:21:01,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:01" (1/1) ... [2020-10-13 06:21:01,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:01" (1/1) ... [2020-10-13 06:21:01,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:01" (1/1) ... [2020-10-13 06:21:01,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:01" (1/1) ... [2020-10-13 06:21:01,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:01" (1/1) ... [2020-10-13 06:21:01,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:01" (1/1) ... [2020-10-13 06:21:01,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:21:01,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:21:01,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:21:01,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:21:01,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:01" (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 06:21:01,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:21:01,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:21:01,784 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:21:01,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:21:01,785 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:21:01,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:21:01,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:21:01,785 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:21:01,785 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:21:01,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:21:01,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:21:03,568 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:21:03,568 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:21:03,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:21:03 BoogieIcfgContainer [2020-10-13 06:21:03,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:21:03,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:21:03,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:21:03,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:21:03,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:21:00" (1/3) ... [2020-10-13 06:21:03,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d04233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:21:03, skipping insertion in model container [2020-10-13 06:21:03,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:21:01" (2/3) ... [2020-10-13 06:21:03,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d04233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:21:03, skipping insertion in model container [2020-10-13 06:21:03,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:21:03" (3/3) ... [2020-10-13 06:21:03,584 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label28.c [2020-10-13 06:21:03,596 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:21:03,610 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:21:03,628 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:21:03,672 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:21:03,673 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:21:03,673 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:21:03,673 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:21:03,673 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:21:03,673 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:21:03,673 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:21:03,674 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:21:03,712 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:21:03,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 06:21:03,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:03,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:03,740 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:03,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:03,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1343441115, now seen corresponding path program 1 times [2020-10-13 06:21:03,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:03,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309457624] [2020-10-13 06:21:03,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:04,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:04,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:07,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:07,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 06:21:07,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:21:07,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3437 [2020-10-13 06:21:07,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:07,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:21:07,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:21:07,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:21:07,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:21:08,698 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2020-10-13 06:21:08,909 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2020-10-13 06:21:09,209 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-10-13 06:21:09,419 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 74 [2020-10-13 06:21:09,643 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-10-13 06:21:09,860 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-10-13 06:21:10,035 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-10-13 06:21:10,320 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:10,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:10,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:10,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:10,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:10,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:10,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 06:21:10,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:21:10,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:21:10,903 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 06:21:10,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309457624] [2020-10-13 06:21:10,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:21:10,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 06:21:10,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183077415] [2020-10-13 06:21:10,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 06:21:10,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:10,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 06:21:10,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:21:10,928 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 12 states. [2020-10-13 06:21:11,286 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 06:21:11,976 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 178 [2020-10-13 06:21:12,583 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 178 [2020-10-13 06:21:13,303 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 198 [2020-10-13 06:21:14,412 WARN L193 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 195 [2020-10-13 06:21:15,413 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 192 [2020-10-13 06:21:16,502 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 189 [2020-10-13 06:21:19,242 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 186 [2020-10-13 06:21:20,195 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 181 [2020-10-13 06:21:22,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:22,839 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:21:22,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:21:22,842 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 158 [2020-10-13 06:21:22,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:22,868 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:21:22,869 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:21:22,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-13 06:21:22,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:21:22,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:21:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:21:22,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:21:22,956 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 158 [2020-10-13 06:21:22,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:22,957 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:21:22,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 06:21:22,957 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:21:22,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-13 06:21:22,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:22,963 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 06:21:22,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:21:22,963 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:22,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:22,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1978186142, now seen corresponding path program 1 times [2020-10-13 06:21:22,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:22,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244959297] [2020-10-13 06:21:22,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:23,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:23,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:25,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:26,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:26,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 06:21:26,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:21:26,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3450 [2020-10-13 06:21:26,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:26,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:26,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:21:26,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-13 06:21:26,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:21:26,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:26,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:26,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:26,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:26,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:26,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:21:26,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:26,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:26,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:26,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:26,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:26,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:26,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:26,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:26,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:21:26,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:26,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:21:26,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:26,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:21:26,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:26,984 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:21:26,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244959297] [2020-10-13 06:21:26,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:26,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:21:26,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177928552] [2020-10-13 06:21:26,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:21:26,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:26,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:21:27,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:21:27,000 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 5 states. [2020-10-13 06:21:27,133 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:21:29,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:29,245 INFO L93 Difference]: Finished difference Result 824 states and 1284 transitions. [2020-10-13 06:21:29,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:21:29,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-13 06:21:29,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:29,257 INFO L225 Difference]: With dead ends: 824 [2020-10-13 06:21:29,257 INFO L226 Difference]: Without dead ends: 581 [2020-10-13 06:21:29,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:21:29,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-10-13 06:21:29,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 579. [2020-10-13 06:21:29,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-10-13 06:21:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 866 transitions. [2020-10-13 06:21:29,301 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 866 transitions. Word has length 169 [2020-10-13 06:21:29,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:29,302 INFO L479 AbstractCegarLoop]: Abstraction has 579 states and 866 transitions. [2020-10-13 06:21:29,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:21:29,302 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 866 transitions. [2020-10-13 06:21:29,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 06:21:29,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:29,307 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:21:29,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:21:29,308 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:29,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:29,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1350019945, now seen corresponding path program 1 times [2020-10-13 06:21:29,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:29,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638003067] [2020-10-13 06:21:29,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:29,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:29,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:30,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:32,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:32,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 06:21:32,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:21:32,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3205 [2020-10-13 06:21:32,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:32,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:32,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:21:32,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:21:32,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:21:32,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:32,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:32,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:32,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:32,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:32,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:21:32,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:32,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:32,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:32,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:32,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:32,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:32,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:32,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:32,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:21:32,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:32,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:21:32,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:32,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:32,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:32,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:21:32,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:32,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:21:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:32,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:32,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:32,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:21:32,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:32,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:21:32,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:32,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:32,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:32,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 06:21:32,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:32,964 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:21:32,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638003067] [2020-10-13 06:21:32,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:32,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:21:32,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156024237] [2020-10-13 06:21:32,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:21:32,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:32,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:21:32,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:21:32,967 INFO L87 Difference]: Start difference. First operand 579 states and 866 transitions. Second operand 7 states. [2020-10-13 06:21:33,103 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:21:33,595 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:21:36,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:36,002 INFO L93 Difference]: Finished difference Result 1269 states and 1988 transitions. [2020-10-13 06:21:36,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:21:36,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2020-10-13 06:21:36,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:36,013 INFO L225 Difference]: With dead ends: 1269 [2020-10-13 06:21:36,013 INFO L226 Difference]: Without dead ends: 811 [2020-10-13 06:21:36,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:21:36,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-10-13 06:21:36,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 797. [2020-10-13 06:21:36,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2020-10-13 06:21:36,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1051 transitions. [2020-10-13 06:21:36,075 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1051 transitions. Word has length 178 [2020-10-13 06:21:36,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:36,075 INFO L479 AbstractCegarLoop]: Abstraction has 797 states and 1051 transitions. [2020-10-13 06:21:36,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:21:36,076 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1051 transitions. [2020-10-13 06:21:36,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-13 06:21:36,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:36,086 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 06:21:36,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:21:36,087 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:36,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:36,087 INFO L82 PathProgramCache]: Analyzing trace with hash -920832790, now seen corresponding path program 1 times [2020-10-13 06:21:36,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:36,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908579207] [2020-10-13 06:21:36,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:36,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:36,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:36,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 06:21:36,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:36,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 643 [2020-10-13 06:21:36,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:36,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:36,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:21:36,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-13 06:21:36,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:21:37,109 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:37,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:37,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:37,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:37,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:37,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:37,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:21:37,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:37,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:37,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:37,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:37,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:21:37,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:37,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:37,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:37,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:21:37,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:37,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 06:21:37,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:37,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:37,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:37,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:21:37,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:21:37,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908579207] [2020-10-13 06:21:37,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:37,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:21:37,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173153117] [2020-10-13 06:21:37,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:21:37,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:37,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:21:37,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:21:37,375 INFO L87 Difference]: Start difference. First operand 797 states and 1051 transitions. Second operand 5 states. [2020-10-13 06:21:37,632 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:21:40,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:40,135 INFO L93 Difference]: Finished difference Result 2122 states and 2900 transitions. [2020-10-13 06:21:40,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:21:40,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-13 06:21:40,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:40,151 INFO L225 Difference]: With dead ends: 2122 [2020-10-13 06:21:40,152 INFO L226 Difference]: Without dead ends: 1446 [2020-10-13 06:21:40,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:21:40,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2020-10-13 06:21:40,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1441. [2020-10-13 06:21:40,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1441 states. [2020-10-13 06:21:40,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1879 transitions. [2020-10-13 06:21:40,235 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1879 transitions. Word has length 179 [2020-10-13 06:21:40,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:40,236 INFO L479 AbstractCegarLoop]: Abstraction has 1441 states and 1879 transitions. [2020-10-13 06:21:40,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:21:40,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1879 transitions. [2020-10-13 06:21:40,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-13 06:21:40,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:40,249 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:40,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:21:40,250 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:40,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:40,251 INFO L82 PathProgramCache]: Analyzing trace with hash -558199390, now seen corresponding path program 1 times [2020-10-13 06:21:40,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:40,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463082171] [2020-10-13 06:21:40,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:40,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:40,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:43,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:43,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-13 06:21:43,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:21:43,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2955 [2020-10-13 06:21:43,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:21:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:21:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:21:43,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:43,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:43,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:43,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:43,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:43,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:43,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 06:21:43,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:43,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:21:43,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:21:43,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:43,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:43,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:43,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:21:43,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:43,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 06:21:43,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:21:43,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:21:43,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463082171] [2020-10-13 06:21:43,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:21:43,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 06:21:43,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819306454] [2020-10-13 06:21:43,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:21:43,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:43,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:21:43,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:21:43,849 INFO L87 Difference]: Start difference. First operand 1441 states and 1879 transitions. Second operand 8 states. [2020-10-13 06:21:44,000 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:21:44,473 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:21:45,200 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:21:48,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:48,274 INFO L93 Difference]: Finished difference Result 5409 states and 7345 transitions. [2020-10-13 06:21:48,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 06:21:48,277 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 190 [2020-10-13 06:21:48,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:48,302 INFO L225 Difference]: With dead ends: 5409 [2020-10-13 06:21:48,302 INFO L226 Difference]: Without dead ends: 4089 [2020-10-13 06:21:48,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:21:48,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4089 states. [2020-10-13 06:21:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4089 to 4063. [2020-10-13 06:21:48,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4063 states. [2020-10-13 06:21:48,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4063 states to 4063 states and 5293 transitions. [2020-10-13 06:21:48,455 INFO L78 Accepts]: Start accepts. Automaton has 4063 states and 5293 transitions. Word has length 190 [2020-10-13 06:21:48,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:48,455 INFO L479 AbstractCegarLoop]: Abstraction has 4063 states and 5293 transitions. [2020-10-13 06:21:48,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:21:48,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4063 states and 5293 transitions. [2020-10-13 06:21:48,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-13 06:21:48,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:48,468 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:48,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:21:48,468 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:48,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:48,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1704777536, now seen corresponding path program 1 times [2020-10-13 06:21:48,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:48,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157175521] [2020-10-13 06:21:48,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:48,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:48,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:50,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:50,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-13 06:21:50,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:21:50,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2041 [2020-10-13 06:21:50,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:50,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:50,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:21:50,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:21:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:50,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:50,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:50,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:50,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:50,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:50,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:21:50,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:50,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:50,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:50,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:50,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:50,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:50,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:50,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:50,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:21:50,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:50,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:21:50,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:50,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:50,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:21:50,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:50,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:21:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:50,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:50,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:50,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:21:50,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:50,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 06:21:50,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:50,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:50,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:50,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:21:50,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:21:51,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157175521] [2020-10-13 06:21:51,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:51,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:21:51,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166012743] [2020-10-13 06:21:51,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:21:51,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:51,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:21:51,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:21:51,107 INFO L87 Difference]: Start difference. First operand 4063 states and 5293 transitions. Second operand 7 states. [2020-10-13 06:21:51,247 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:21:51,872 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:21:54,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:54,361 INFO L93 Difference]: Finished difference Result 11994 states and 16406 transitions. [2020-10-13 06:21:54,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:21:54,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2020-10-13 06:21:54,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:54,408 INFO L225 Difference]: With dead ends: 11994 [2020-10-13 06:21:54,409 INFO L226 Difference]: Without dead ends: 8052 [2020-10-13 06:21:54,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:21:54,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8052 states. [2020-10-13 06:21:54,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8052 to 7946. [2020-10-13 06:21:54,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7946 states. [2020-10-13 06:21:54,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7946 states to 7946 states and 10302 transitions. [2020-10-13 06:21:54,647 INFO L78 Accepts]: Start accepts. Automaton has 7946 states and 10302 transitions. Word has length 227 [2020-10-13 06:21:54,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:54,648 INFO L479 AbstractCegarLoop]: Abstraction has 7946 states and 10302 transitions. [2020-10-13 06:21:54,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:21:54,648 INFO L276 IsEmpty]: Start isEmpty. Operand 7946 states and 10302 transitions. [2020-10-13 06:21:54,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-13 06:21:54,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:54,669 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:21:54,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:21:54,669 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:54,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:54,670 INFO L82 PathProgramCache]: Analyzing trace with hash 983228797, now seen corresponding path program 1 times [2020-10-13 06:21:54,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:54,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662435063] [2020-10-13 06:21:54,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:54,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:54,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:54,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:55,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:56,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:59,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:59,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-13 06:21:59,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:21:59,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 06:21:59,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:21:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:21:59,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:59,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:59,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:59,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:59,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:59,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:59,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:21:59,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:59,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:59,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:59,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:59,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:59,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:59,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:00,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:00,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:22:00,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:00,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 06:22:00,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:00,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:00,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:00,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:22:00,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:00,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:22:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:00,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:00,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 06:22:00,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:00,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 06:22:00,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:00,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:00,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:00,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 06:22:00,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:00,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 06:22:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:00,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:00,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:00,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:22:00,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:00,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:22:00,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:00,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:00,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 06:22:00,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:00,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:00,236 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 88 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 06:22:00,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662435063] [2020-10-13 06:22:00,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:00,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:22:00,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842198258] [2020-10-13 06:22:00,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:22:00,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:00,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:22:00,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:22:00,239 INFO L87 Difference]: Start difference. First operand 7946 states and 10302 transitions. Second operand 7 states. [2020-10-13 06:22:00,531 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:22:01,056 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:22:03,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:03,601 INFO L93 Difference]: Finished difference Result 19972 states and 27611 transitions. [2020-10-13 06:22:03,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:22:03,601 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2020-10-13 06:22:03,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:03,673 INFO L225 Difference]: With dead ends: 19972 [2020-10-13 06:22:03,673 INFO L226 Difference]: Without dead ends: 12147 [2020-10-13 06:22:03,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:22:03,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12147 states. [2020-10-13 06:22:04,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12147 to 11839. [2020-10-13 06:22:04,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11839 states. [2020-10-13 06:22:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11839 states to 11839 states and 15141 transitions. [2020-10-13 06:22:04,111 INFO L78 Accepts]: Start accepts. Automaton has 11839 states and 15141 transitions. Word has length 235 [2020-10-13 06:22:04,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:04,112 INFO L479 AbstractCegarLoop]: Abstraction has 11839 states and 15141 transitions. [2020-10-13 06:22:04,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:22:04,112 INFO L276 IsEmpty]: Start isEmpty. Operand 11839 states and 15141 transitions. [2020-10-13 06:22:04,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-13 06:22:04,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:04,138 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:22:04,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:22:04,139 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:04,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:04,139 INFO L82 PathProgramCache]: Analyzing trace with hash 334540044, now seen corresponding path program 1 times [2020-10-13 06:22:04,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:04,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891758196] [2020-10-13 06:22:04,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:04,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:04,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:05,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:05,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-13 06:22:05,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:22:05,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1219 [2020-10-13 06:22:05,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:22:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:22:05,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:05,592 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:05,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:05,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:05,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:05,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:05,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:05,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:22:05,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:05,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:05,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:05,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:05,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:05,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:05,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:05,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:05,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:22:05,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:05,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:22:05,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:05,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:05,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:05,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:22:05,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:05,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:22:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:05,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:05,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:05,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:22:05,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:05,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 06:22:05,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:05,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:05,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:22:05,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:05,950 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:22:05,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891758196] [2020-10-13 06:22:05,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:05,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:22:05,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511949470] [2020-10-13 06:22:05,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:22:05,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:05,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:22:05,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:22:05,953 INFO L87 Difference]: Start difference. First operand 11839 states and 15141 transitions. Second operand 7 states. [2020-10-13 06:22:06,243 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:22:07,433 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:22:10,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:10,549 INFO L93 Difference]: Finished difference Result 31489 states and 43511 transitions. [2020-10-13 06:22:10,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:22:10,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-10-13 06:22:10,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:10,672 INFO L225 Difference]: With dead ends: 31489 [2020-10-13 06:22:10,672 INFO L226 Difference]: Without dead ends: 19771 [2020-10-13 06:22:10,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:22:10,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19771 states. [2020-10-13 06:22:11,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19771 to 18494. [2020-10-13 06:22:11,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18494 states. [2020-10-13 06:22:11,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18494 states to 18494 states and 23140 transitions. [2020-10-13 06:22:11,331 INFO L78 Accepts]: Start accepts. Automaton has 18494 states and 23140 transitions. Word has length 237 [2020-10-13 06:22:11,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:11,332 INFO L479 AbstractCegarLoop]: Abstraction has 18494 states and 23140 transitions. [2020-10-13 06:22:11,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:22:11,332 INFO L276 IsEmpty]: Start isEmpty. Operand 18494 states and 23140 transitions. [2020-10-13 06:22:11,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-13 06:22:11,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:11,374 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-13 06:22:11,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:22:11,375 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:11,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:11,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1971402512, now seen corresponding path program 1 times [2020-10-13 06:22:11,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:11,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356536390] [2020-10-13 06:22:11,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:11,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:12,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:12,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:12,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-13 06:22:12,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:22:12,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-10-13 06:22:12,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:12,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:22:12,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:22:12,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:12,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:12,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:12,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:12,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:12,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:12,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:22:12,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:12,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:22:12,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:12,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:12,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:12,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:22:12,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:12,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 06:22:12,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:22:12,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:12,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:22:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:13,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:13,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:13,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:22:13,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:13,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 06:22:13,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:22:13,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:22:13,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356536390] [2020-10-13 06:22:13,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:13,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:22:13,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905570864] [2020-10-13 06:22:13,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:22:13,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:13,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:22:13,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:22:13,265 INFO L87 Difference]: Start difference. First operand 18494 states and 23140 transitions. Second operand 7 states. [2020-10-13 06:22:13,469 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:22:13,850 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:22:18,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:18,747 INFO L93 Difference]: Finished difference Result 58299 states and 74019 transitions. [2020-10-13 06:22:18,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:22:18,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-13 06:22:18,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:18,863 INFO L225 Difference]: With dead ends: 58299 [2020-10-13 06:22:18,863 INFO L226 Difference]: Without dead ends: 40178 [2020-10-13 06:22:18,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:22:18,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40178 states. [2020-10-13 06:22:19,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40178 to 40047. [2020-10-13 06:22:19,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40047 states. [2020-10-13 06:22:19,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40047 states to 40047 states and 50393 transitions. [2020-10-13 06:22:19,764 INFO L78 Accepts]: Start accepts. Automaton has 40047 states and 50393 transitions. Word has length 251 [2020-10-13 06:22:19,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:19,764 INFO L479 AbstractCegarLoop]: Abstraction has 40047 states and 50393 transitions. [2020-10-13 06:22:19,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:22:19,764 INFO L276 IsEmpty]: Start isEmpty. Operand 40047 states and 50393 transitions. [2020-10-13 06:22:19,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-13 06:22:19,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:19,823 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:22:19,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:22:19,824 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:19,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:19,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1401629024, now seen corresponding path program 1 times [2020-10-13 06:22:19,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:19,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698416070] [2020-10-13 06:22:19,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:19,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:20,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:21,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:24,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:24,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-13 06:22:24,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:22:24,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4908 [2020-10-13 06:22:24,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:24,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:24,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:22:24,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 06:22:24,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:24,968 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:24,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:24,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:24,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:24,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:24,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:24,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:22:24,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:24,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:24,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:24,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:24,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:25,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:25,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:25,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:25,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:22:25,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:25,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:22:25,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:22:25,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:25,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:22:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:25,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:25,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:25,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:22:25,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:25,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-13 06:22:25,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 06:22:25,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:22:25,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698416070] [2020-10-13 06:22:25,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:25,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:22:25,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479324857] [2020-10-13 06:22:25,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:22:25,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:25,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:22:25,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:22:25,414 INFO L87 Difference]: Start difference. First operand 40047 states and 50393 transitions. Second operand 7 states. [2020-10-13 06:22:25,735 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:22:26,435 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:22:28,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:28,842 INFO L93 Difference]: Finished difference Result 85172 states and 110630 transitions. [2020-10-13 06:22:28,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:22:28,842 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-10-13 06:22:28,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:29,064 INFO L225 Difference]: With dead ends: 85172 [2020-10-13 06:22:29,065 INFO L226 Difference]: Without dead ends: 50489 [2020-10-13 06:22:29,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:22:29,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50489 states. [2020-10-13 06:22:30,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50489 to 50004. [2020-10-13 06:22:30,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50004 states. [2020-10-13 06:22:30,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50004 states to 50004 states and 61642 transitions. [2020-10-13 06:22:30,582 INFO L78 Accepts]: Start accepts. Automaton has 50004 states and 61642 transitions. Word has length 256 [2020-10-13 06:22:30,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:30,583 INFO L479 AbstractCegarLoop]: Abstraction has 50004 states and 61642 transitions. [2020-10-13 06:22:30,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:22:30,583 INFO L276 IsEmpty]: Start isEmpty. Operand 50004 states and 61642 transitions. [2020-10-13 06:22:30,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-13 06:22:30,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:30,643 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:22:30,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:22:30,643 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:30,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:30,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1868853097, now seen corresponding path program 1 times [2020-10-13 06:22:30,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:30,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499866903] [2020-10-13 06:22:30,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:30,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:30,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:31,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:35,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:35,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-13 06:22:35,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:22:35,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 06:22:35,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:35,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:35,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:22:35,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:22:35,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:35,843 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:35,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:35,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:35,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:35,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:35,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:35,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:22:35,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:35,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:35,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:35,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:35,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:35,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:22:35,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:35,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:22:35,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:35,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:35,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:35,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:22:35,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:35,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:22:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:35,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:36,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:36,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:22:36,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:36,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:22:36,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:22:36,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:36,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 06:22:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:36,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:36,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:36,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:22:36,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:36,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 06:22:36,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:36,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 06:22:36,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:36,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:36,214 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 153 proven. 33 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-13 06:22:36,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499866903] [2020-10-13 06:22:36,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:36,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:22:36,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996888922] [2020-10-13 06:22:36,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:22:36,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:36,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:22:36,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:22:36,216 INFO L87 Difference]: Start difference. First operand 50004 states and 61642 transitions. Second operand 7 states. [2020-10-13 06:22:36,409 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:22:36,648 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:22:40,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:40,207 INFO L93 Difference]: Finished difference Result 104438 states and 131818 transitions. [2020-10-13 06:22:40,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:22:40,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2020-10-13 06:22:40,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:40,396 INFO L225 Difference]: With dead ends: 104438 [2020-10-13 06:22:40,396 INFO L226 Difference]: Without dead ends: 54766 [2020-10-13 06:22:40,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:22:40,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54766 states. [2020-10-13 06:22:41,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54766 to 51700. [2020-10-13 06:22:41,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51700 states. [2020-10-13 06:22:41,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51700 states to 51700 states and 61291 transitions. [2020-10-13 06:22:41,645 INFO L78 Accepts]: Start accepts. Automaton has 51700 states and 61291 transitions. Word has length 285 [2020-10-13 06:22:41,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:41,645 INFO L479 AbstractCegarLoop]: Abstraction has 51700 states and 61291 transitions. [2020-10-13 06:22:41,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:22:41,645 INFO L276 IsEmpty]: Start isEmpty. Operand 51700 states and 61291 transitions. [2020-10-13 06:22:41,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-13 06:22:41,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:41,678 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-13 06:22:41,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:22:41,678 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:41,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:41,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1200075110, now seen corresponding path program 1 times [2020-10-13 06:22:41,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:41,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810497445] [2020-10-13 06:22:41,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:41,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:41,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:42,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:45,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:45,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-13 06:22:45,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:22:45,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3449 [2020-10-13 06:22:45,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:45,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:45,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 06:22:45,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:22:45,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:45,351 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:45,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:45,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:45,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:45,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:45,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:45,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:22:45,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:45,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:45,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:45,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:45,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:45,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:45,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:45,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:45,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:22:45,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:45,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:22:45,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:45,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:45,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:45,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:45,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:45,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:22:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:45,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:45,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:45,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 06:22:45,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:45,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 06:22:45,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:45,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:22:45,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:45,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 06:22:45,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:45,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 06:22:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:45,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:45,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:45,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:22:45,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:45,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 06:22:45,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:22:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:45,799 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:22:45,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810497445] [2020-10-13 06:22:45,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:45,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:22:45,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600733417] [2020-10-13 06:22:45,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:22:45,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:45,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:22:45,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:22:45,801 INFO L87 Difference]: Start difference. First operand 51700 states and 61291 transitions. Second operand 8 states. [2020-10-13 06:22:46,105 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:22:46,865 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:22:48,667 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:22:53,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:22:53,409 INFO L93 Difference]: Finished difference Result 220531 states and 281399 transitions. [2020-10-13 06:22:53,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 06:22:53,410 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 305 [2020-10-13 06:22:53,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:22:54,128 INFO L225 Difference]: With dead ends: 220531 [2020-10-13 06:22:54,128 INFO L226 Difference]: Without dead ends: 169002 [2020-10-13 06:22:54,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:22:54,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169002 states. [2020-10-13 06:22:59,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169002 to 163774. [2020-10-13 06:22:59,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163774 states. [2020-10-13 06:22:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163774 states to 163774 states and 204498 transitions. [2020-10-13 06:22:59,692 INFO L78 Accepts]: Start accepts. Automaton has 163774 states and 204498 transitions. Word has length 305 [2020-10-13 06:22:59,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:59,692 INFO L479 AbstractCegarLoop]: Abstraction has 163774 states and 204498 transitions. [2020-10-13 06:22:59,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:22:59,692 INFO L276 IsEmpty]: Start isEmpty. Operand 163774 states and 204498 transitions. [2020-10-13 06:22:59,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-13 06:22:59,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:59,828 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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] [2020-10-13 06:22:59,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:22:59,829 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:59,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:59,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1960856969, now seen corresponding path program 1 times [2020-10-13 06:22:59,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:59,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039411320] [2020-10-13 06:22:59,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:00,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:00,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:00,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:00,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:02,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:04,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:04,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-13 06:23:04,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:23:04,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 06:23:04,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:04,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:04,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 06:23:04,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:23:04,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:05,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:05,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:05,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:05,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:05,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:23:05,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:05,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:05,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:05,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:05,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:05,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:05,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:05,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:23:05,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:05,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:23:05,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:05,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:05,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:05,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:23:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:05,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:05,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:23:05,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:05,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 06:23:05,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:05,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:05,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:05,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 06:23:05,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:05,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 06:23:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:05,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:05,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:23:05,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:05,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:23:05,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:23:05,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:05,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-13 06:23:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:05,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:05,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:23:05,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:05,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:23:05,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 06:23:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:05,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:05,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-13 06:23:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:05,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:05,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:05,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:23:05,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:05,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:23:05,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:05,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:05,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 06:23:05,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:05,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:05,490 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 178 proven. 12 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-13 06:23:05,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039411320] [2020-10-13 06:23:05,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:05,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:05,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4957855] [2020-10-13 06:23:05,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:05,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:05,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:05,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:05,492 INFO L87 Difference]: Start difference. First operand 163774 states and 204498 transitions. Second operand 7 states. [2020-10-13 06:23:05,954 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-13 06:23:06,265 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:23:21,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:21,567 INFO L93 Difference]: Finished difference Result 481410 states and 664583 transitions. [2020-10-13 06:23:21,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:23:21,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 324 [2020-10-13 06:23:21,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:23,193 INFO L225 Difference]: With dead ends: 481410 [2020-10-13 06:23:23,193 INFO L226 Difference]: Without dead ends: 362095 [2020-10-13 06:23:23,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:23:23,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362095 states. [2020-10-13 06:23:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362095 to 345683. [2020-10-13 06:23:33,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345683 states. [2020-10-13 06:23:35,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345683 states to 345683 states and 446695 transitions. [2020-10-13 06:23:35,875 INFO L78 Accepts]: Start accepts. Automaton has 345683 states and 446695 transitions. Word has length 324 [2020-10-13 06:23:35,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:23:35,876 INFO L479 AbstractCegarLoop]: Abstraction has 345683 states and 446695 transitions. [2020-10-13 06:23:35,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:23:35,876 INFO L276 IsEmpty]: Start isEmpty. Operand 345683 states and 446695 transitions. [2020-10-13 06:23:36,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-13 06:23:36,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:23:36,033 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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] [2020-10-13 06:23:36,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:23:36,033 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:23:36,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:23:36,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1281696630, now seen corresponding path program 1 times [2020-10-13 06:23:36,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:23:36,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665948020] [2020-10-13 06:23:36,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:23:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:36,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:36,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:36,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:37,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:42,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:42,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-13 06:23:42,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:23:42,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6850 [2020-10-13 06:23:42,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 06:23:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:23:42,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:43,084 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:23:43,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:23:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:43,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:43,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:43,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:23:43,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:43,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:23:43,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:43,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:43,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:43,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:43,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:43,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:23:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:43,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:43,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:43,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:23:43,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:43,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:23:43,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:43,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:43,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:43,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:43,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:43,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:23:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:43,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:43,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:43,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 06:23:43,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:43,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:23:43,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:43,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:43,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 06:23:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:43,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:43,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:43,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:23:43,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:43,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:23:43,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:23:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:23:43,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:43,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:23:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:43,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:43,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:43,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:23:43,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:43,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:23:43,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:43,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:23:43,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:23:43,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 06:23:43,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:43,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 06:23:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:23:43,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:23:43,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:23:43,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:23:43,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:23:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 06:23:43,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:23:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:23:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:23:43,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:23:43,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:23:43,463 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 241 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-13 06:23:43,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665948020] [2020-10-13 06:23:43,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:23:43,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:23:43,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579830011] [2020-10-13 06:23:43,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:23:43,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:23:43,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:23:43,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:23:43,465 INFO L87 Difference]: Start difference. First operand 345683 states and 446695 transitions. Second operand 7 states. [2020-10-13 06:23:43,592 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:23:45,455 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:23:53,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:23:53,202 INFO L93 Difference]: Finished difference Result 696338 states and 918283 transitions. [2020-10-13 06:23:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:23:53,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 326 [2020-10-13 06:23:53,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:23:54,445 INFO L225 Difference]: With dead ends: 696338 [2020-10-13 06:23:54,445 INFO L226 Difference]: Without dead ends: 352788 [2020-10-13 06:23:54,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:23:55,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352788 states. [2020-10-13 06:24:07,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352788 to 337660. [2020-10-13 06:24:07,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337660 states. [2020-10-13 06:24:09,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337660 states to 337660 states and 425033 transitions. [2020-10-13 06:24:09,926 INFO L78 Accepts]: Start accepts. Automaton has 337660 states and 425033 transitions. Word has length 326 [2020-10-13 06:24:09,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:24:09,927 INFO L479 AbstractCegarLoop]: Abstraction has 337660 states and 425033 transitions. [2020-10-13 06:24:09,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:24:09,927 INFO L276 IsEmpty]: Start isEmpty. Operand 337660 states and 425033 transitions. [2020-10-13 06:24:10,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-13 06:24:10,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:24:10,104 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:24:10,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:24:10,104 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:24:10,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:24:10,104 INFO L82 PathProgramCache]: Analyzing trace with hash 309444998, now seen corresponding path program 1 times [2020-10-13 06:24:10,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:24:10,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360439619] [2020-10-13 06:24:10,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:24:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:24:10,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:10,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:10,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:24:13,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking...