/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:30:43,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:30:43,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:30:44,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:30:44,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:30:44,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:30:44,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:30:44,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:30:44,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:30:44,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:30:44,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:30:44,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:30:44,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:30:44,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:30:44,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:30:44,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:30:44,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:30:44,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:30:44,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:30:44,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:30:44,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:30:44,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:30:44,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:30:44,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:30:44,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:30:44,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:30:44,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:30:44,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:30:44,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:30:44,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:30:44,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:30:44,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:30:44,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:30:44,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:30:44,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:30:44,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:30:44,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:30:44,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:30:44,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:30:44,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:30:44,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:30:44,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:30:44,179 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:30:44,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:30:44,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:30:44,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:30:44,182 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:30:44,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:30:44,182 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:30:44,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:30:44,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:30:44,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:30:44,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:30:44,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:30:44,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:30:44,185 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:30:44,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:30:44,185 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:30:44,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:30:44,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:30:44,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:30:44,186 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:30:44,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:30:44,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:30:44,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:30:44,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:30:44,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:30:44,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:30:44,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:30:44,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:30:44,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:30:44,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:30:44,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:30:44,686 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:30:44,691 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:30:44,693 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:30:44,693 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:30:44,695 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-24 19:30:44,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ef4e2fc9/29fb6a5c637546889b1ef9945912e477/FLAG71dbdc89d [2020-09-24 19:30:45,472 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:30:45,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-24 19:30:45,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ef4e2fc9/29fb6a5c637546889b1ef9945912e477/FLAG71dbdc89d [2020-09-24 19:30:45,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ef4e2fc9/29fb6a5c637546889b1ef9945912e477 [2020-09-24 19:30:45,732 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:30:45,738 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:30:45,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:45,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:30:45,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:30:45,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:45" (1/1) ... [2020-09-24 19:30:45,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ec4735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:45, skipping insertion in model container [2020-09-24 19:30:45,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:45" (1/1) ... [2020-09-24 19:30:45,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:30:45,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:30:46,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:46,488 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:30:46,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:46,670 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:30:46,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:46 WrapperNode [2020-09-24 19:30:46,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:46,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:30:46,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:30:46,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:30:46,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:46" (1/1) ... [2020-09-24 19:30:46,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:46" (1/1) ... [2020-09-24 19:30:46,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:46" (1/1) ... [2020-09-24 19:30:46,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:46" (1/1) ... [2020-09-24 19:30:46,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:46" (1/1) ... [2020-09-24 19:30:46,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:46" (1/1) ... [2020-09-24 19:30:46,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:46" (1/1) ... [2020-09-24 19:30:46,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:30:46,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:30:46,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:30:46,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:30:46,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:30:46,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:30:46,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:30:46,949 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:30:46,949 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:30:46,949 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:30:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:30:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:30:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:30:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:30:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:30:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:30:49,115 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:30:49,115 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:30:49,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:49 BoogieIcfgContainer [2020-09-24 19:30:49,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:30:49,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:30:49,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:30:49,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:30:49,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:30:45" (1/3) ... [2020-09-24 19:30:49,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a476226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:49, skipping insertion in model container [2020-09-24 19:30:49,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:46" (2/3) ... [2020-09-24 19:30:49,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a476226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:49, skipping insertion in model container [2020-09-24 19:30:49,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:49" (3/3) ... [2020-09-24 19:30:49,136 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label24.c [2020-09-24 19:30:49,147 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:30:49,158 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:30:49,180 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:30:49,213 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:30:49,213 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:30:49,214 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:30:49,214 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:30:49,214 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:30:49,214 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:30:49,214 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:30:49,214 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:30:49,255 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-24 19:30:49,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 19:30:49,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:49,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:49,273 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:49,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:49,282 INFO L82 PathProgramCache]: Analyzing trace with hash -444760420, now seen corresponding path program 1 times [2020-09-24 19:30:49,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:49,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306757279] [2020-09-24 19:30:49,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:49,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:49,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:49,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:50,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:50,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 19:30:50,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:50,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 695 [2020-09-24 19:30:50,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:30:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 19:30:50,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:30:50,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:50,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:50,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:50,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:50,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:50,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 19:30:50,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:50,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:50,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:50,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:30:50,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:50,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:50,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306757279] [2020-09-24 19:30:50,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:30:50,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:30:50,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470909287] [2020-09-24 19:30:50,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:30:50,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:50,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:30:50,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:30:50,391 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-24 19:30:53,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:53,466 INFO L93 Difference]: Finished difference Result 1656 states and 2196 transitions. [2020-09-24 19:30:53,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:30:53,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-24 19:30:53,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:53,497 INFO L225 Difference]: With dead ends: 1656 [2020-09-24 19:30:53,498 INFO L226 Difference]: Without dead ends: 920 [2020-09-24 19:30:53,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:53,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-24 19:30:53,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 806. [2020-09-24 19:30:53,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-24 19:30:53,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 969 transitions. [2020-09-24 19:30:53,632 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 969 transitions. Word has length 60 [2020-09-24 19:30:53,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:53,633 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 969 transitions. [2020-09-24 19:30:53,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:30:53,633 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 969 transitions. [2020-09-24 19:30:53,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-24 19:30:53,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:53,642 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:53,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:30:53,642 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:53,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:53,643 INFO L82 PathProgramCache]: Analyzing trace with hash -681557324, now seen corresponding path program 1 times [2020-09-24 19:30:53,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:53,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903441556] [2020-09-24 19:30:53,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:53,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:54,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:54,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:54,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:54,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-24 19:30:54,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:54,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-24 19:30:54,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-09-24 19:30:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 19:30:54,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:54,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:54,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:54,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:54,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:54,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:54,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:30:54,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:54,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:54,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:54,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:54,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:54,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:54,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:54,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:54,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:30:54,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:54,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 19:30:54,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:54,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:54,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:54,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 19:30:54,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:55,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903441556] [2020-09-24 19:30:55,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:55,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:30:55,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957216676] [2020-09-24 19:30:55,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:55,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:55,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:55,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:55,020 INFO L87 Difference]: Start difference. First operand 806 states and 969 transitions. Second operand 5 states. [2020-09-24 19:30:57,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:57,724 INFO L93 Difference]: Finished difference Result 2007 states and 2507 transitions. [2020-09-24 19:30:57,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:30:57,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-24 19:30:57,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:57,731 INFO L225 Difference]: With dead ends: 2007 [2020-09-24 19:30:57,732 INFO L226 Difference]: Without dead ends: 1021 [2020-09-24 19:30:57,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:30:57,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2020-09-24 19:30:57,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 993. [2020-09-24 19:30:57,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 993 states. [2020-09-24 19:30:57,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1165 transitions. [2020-09-24 19:30:57,772 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1165 transitions. Word has length 139 [2020-09-24 19:30:57,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:57,773 INFO L479 AbstractCegarLoop]: Abstraction has 993 states and 1165 transitions. [2020-09-24 19:30:57,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:30:57,773 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1165 transitions. [2020-09-24 19:30:57,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-24 19:30:57,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:57,780 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:57,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:30:57,780 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:57,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:57,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1489575125, now seen corresponding path program 1 times [2020-09-24 19:30:57,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:57,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036149972] [2020-09-24 19:30:57,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:57,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:58,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:58,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:58,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:58,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:58,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:58,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:58,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-24 19:30:58,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:30:58,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-09-24 19:30:58,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:58,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:58,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-09-24 19:30:58,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 19:30:58,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:58,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:58,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:58,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:58,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:58,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:30:58,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:58,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:58,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:30:58,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:59,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:59,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:59,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 19:30:59,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:59,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 19:30:59,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 19:30:59,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:59,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036149972] [2020-09-24 19:30:59,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:59,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:30:59,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358465044] [2020-09-24 19:30:59,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:59,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:59,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:59,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:59,119 INFO L87 Difference]: Start difference. First operand 993 states and 1165 transitions. Second operand 5 states. [2020-09-24 19:31:02,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:02,160 INFO L93 Difference]: Finished difference Result 2514 states and 3000 transitions. [2020-09-24 19:31:02,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:31:02,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-24 19:31:02,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:02,169 INFO L225 Difference]: With dead ends: 2514 [2020-09-24 19:31:02,170 INFO L226 Difference]: Without dead ends: 1536 [2020-09-24 19:31:02,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:31:02,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2020-09-24 19:31:02,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1184. [2020-09-24 19:31:02,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1184 states. [2020-09-24 19:31:02,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1440 transitions. [2020-09-24 19:31:02,213 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1440 transitions. Word has length 147 [2020-09-24 19:31:02,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:02,214 INFO L479 AbstractCegarLoop]: Abstraction has 1184 states and 1440 transitions. [2020-09-24 19:31:02,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:31:02,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1440 transitions. [2020-09-24 19:31:02,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-24 19:31:02,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:02,218 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:02,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:31:02,218 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:02,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:02,219 INFO L82 PathProgramCache]: Analyzing trace with hash -698035219, now seen corresponding path program 1 times [2020-09-24 19:31:02,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:02,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494138562] [2020-09-24 19:31:02,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:02,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:02,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:02,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:03,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:03,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 19:31:03,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:31:03,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-24 19:31:03,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:03,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:31:03,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-09-24 19:31:03,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 19:31:03,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:03,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:03,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:03,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:03,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:03,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:03,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:31:03,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:03,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:03,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:03,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:03,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:03,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-24 19:31:03,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:03,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-24 19:31:03,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:03,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:03,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:03,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-24 19:31:03,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:31:03,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494138562] [2020-09-24 19:31:03,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:03,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:03,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9969576] [2020-09-24 19:31:03,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:03,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:03,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:03,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:03,924 INFO L87 Difference]: Start difference. First operand 1184 states and 1440 transitions. Second operand 7 states. [2020-09-24 19:31:08,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:08,541 INFO L93 Difference]: Finished difference Result 2990 states and 3734 transitions. [2020-09-24 19:31:08,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:31:08,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-09-24 19:31:08,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:08,554 INFO L225 Difference]: With dead ends: 2990 [2020-09-24 19:31:08,555 INFO L226 Difference]: Without dead ends: 1395 [2020-09-24 19:31:08,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:31:08,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2020-09-24 19:31:08,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1369. [2020-09-24 19:31:08,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1369 states. [2020-09-24 19:31:08,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1648 transitions. [2020-09-24 19:31:08,598 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1648 transitions. Word has length 163 [2020-09-24 19:31:08,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:08,599 INFO L479 AbstractCegarLoop]: Abstraction has 1369 states and 1648 transitions. [2020-09-24 19:31:08,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:08,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1648 transitions. [2020-09-24 19:31:08,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-24 19:31:08,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:08,602 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:08,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:31:08,602 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:08,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:08,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1378628793, now seen corresponding path program 1 times [2020-09-24 19:31:08,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:08,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304170593] [2020-09-24 19:31:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:08,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:08,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:09,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:09,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:09,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:09,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-24 19:31:09,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:31:09,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:31:09,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-09-24 19:31:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 19:31:09,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:09,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:09,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:09,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:09,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:09,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:09,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:31:09,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:09,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:09,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:09,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:09,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:09,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:09,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:09,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:09,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 19:31:09,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:09,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 19:31:09,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:09,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:09,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:09,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 19:31:09,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:09,941 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:31:09,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304170593] [2020-09-24 19:31:09,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:09,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:31:09,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214624759] [2020-09-24 19:31:09,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:31:09,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:09,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:31:09,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:31:09,944 INFO L87 Difference]: Start difference. First operand 1369 states and 1648 transitions. Second operand 5 states. [2020-09-24 19:31:12,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:12,651 INFO L93 Difference]: Finished difference Result 1781 states and 2273 transitions. [2020-09-24 19:31:12,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:31:12,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-09-24 19:31:12,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:12,663 INFO L225 Difference]: With dead ends: 1781 [2020-09-24 19:31:12,663 INFO L226 Difference]: Without dead ends: 1779 [2020-09-24 19:31:12,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:31:12,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2020-09-24 19:31:12,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1751. [2020-09-24 19:31:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1751 states. [2020-09-24 19:31:12,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2237 transitions. [2020-09-24 19:31:12,717 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2237 transitions. Word has length 171 [2020-09-24 19:31:12,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:12,718 INFO L479 AbstractCegarLoop]: Abstraction has 1751 states and 2237 transitions. [2020-09-24 19:31:12,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:31:12,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2237 transitions. [2020-09-24 19:31:12,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-24 19:31:12,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:12,723 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:12,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:31:12,724 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:12,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:12,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1760522681, now seen corresponding path program 1 times [2020-09-24 19:31:12,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:12,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808230388] [2020-09-24 19:31:12,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:12,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:12,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:13,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:13,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:13,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:13,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-24 19:31:13,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:31:13,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-09-24 19:31:13,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:31:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-24 19:31:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 19:31:13,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:13,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:13,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:13,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:13,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:13,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:13,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:31:13,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:13,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:13,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:13,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:14,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:14,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 19:31:14,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:14,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-24 19:31:14,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:14,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:31:14,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:14,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 19:31:14,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:14,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-24 19:31:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:14,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:14,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:14,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 19:31:14,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:14,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-24 19:31:14,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:14,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:14,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 19:31:14,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:14,421 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:31:14,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808230388] [2020-09-24 19:31:14,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:14,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:31:14,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705562511] [2020-09-24 19:31:14,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:31:14,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:14,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:31:14,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:31:14,423 INFO L87 Difference]: Start difference. First operand 1751 states and 2237 transitions. Second operand 8 states. [2020-09-24 19:31:19,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:19,250 INFO L93 Difference]: Finished difference Result 4825 states and 6496 transitions. [2020-09-24 19:31:19,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 19:31:19,251 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 231 [2020-09-24 19:31:19,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:19,271 INFO L225 Difference]: With dead ends: 4825 [2020-09-24 19:31:19,271 INFO L226 Difference]: Without dead ends: 3089 [2020-09-24 19:31:19,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:31:19,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2020-09-24 19:31:19,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 2542. [2020-09-24 19:31:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2542 states. [2020-09-24 19:31:19,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 3125 transitions. [2020-09-24 19:31:19,362 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 3125 transitions. Word has length 231 [2020-09-24 19:31:19,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:19,362 INFO L479 AbstractCegarLoop]: Abstraction has 2542 states and 3125 transitions. [2020-09-24 19:31:19,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:31:19,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 3125 transitions. [2020-09-24 19:31:19,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-24 19:31:19,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:19,369 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:19,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:31:19,369 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:19,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:19,370 INFO L82 PathProgramCache]: Analyzing trace with hash 69873997, now seen corresponding path program 1 times [2020-09-24 19:31:19,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:19,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981501129] [2020-09-24 19:31:19,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:19,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:19,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:19,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:20,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:20,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-24 19:31:20,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:31:20,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-24 19:31:20,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-24 19:31:20,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 19:31:20,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:20,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:20,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:20,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:20,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:20,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:20,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:31:20,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:20,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:20,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:20,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:20,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:20,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:20,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:20,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:20,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:31:20,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 19:31:20,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-24 19:31:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:20,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 19:31:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:20,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:20,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:20,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 19:31:20,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:20,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 19:31:20,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:20,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:20,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:20,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 19:31:20,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:20,914 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:31:20,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981501129] [2020-09-24 19:31:20,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:20,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:20,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116362297] [2020-09-24 19:31:20,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:20,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:20,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:20,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:20,917 INFO L87 Difference]: Start difference. First operand 2542 states and 3125 transitions. Second operand 7 states. [2020-09-24 19:31:25,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:25,565 INFO L93 Difference]: Finished difference Result 7652 states and 10094 transitions. [2020-09-24 19:31:25,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:31:25,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-09-24 19:31:25,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:25,593 INFO L225 Difference]: With dead ends: 7652 [2020-09-24 19:31:25,593 INFO L226 Difference]: Without dead ends: 4511 [2020-09-24 19:31:25,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:31:25,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2020-09-24 19:31:25,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 3589. [2020-09-24 19:31:25,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3589 states. [2020-09-24 19:31:25,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 4346 transitions. [2020-09-24 19:31:25,733 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 4346 transitions. Word has length 240 [2020-09-24 19:31:25,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:25,734 INFO L479 AbstractCegarLoop]: Abstraction has 3589 states and 4346 transitions. [2020-09-24 19:31:25,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:25,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 4346 transitions. [2020-09-24 19:31:25,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-09-24 19:31:25,741 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:25,742 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:25,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:31:25,742 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:25,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:25,743 INFO L82 PathProgramCache]: Analyzing trace with hash 860388200, now seen corresponding path program 1 times [2020-09-24 19:31:25,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:25,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302973032] [2020-09-24 19:31:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:25,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:26,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:26,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:26,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:26,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-09-24 19:31:26,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:31:26,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-09-24 19:31:26,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:26,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:26,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-24 19:31:26,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 19:31:26,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:26,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:26,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:26,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:26,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:26,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:26,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:31:26,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:26,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:26,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:26,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:26,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:26,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:27,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:27,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:27,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:27,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:27,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 19:31:27,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:27,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:27,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:27,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 19:31:27,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:27,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:27,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:27,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:27,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 19:31:27,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-24 19:31:27,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 19:31:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:27,466 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:31:27,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302973032] [2020-09-24 19:31:27,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:27,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:27,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682859721] [2020-09-24 19:31:27,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:27,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:27,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:27,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:27,469 INFO L87 Difference]: Start difference. First operand 3589 states and 4346 transitions. Second operand 7 states. [2020-09-24 19:31:30,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:30,848 INFO L93 Difference]: Finished difference Result 6534 states and 8092 transitions. [2020-09-24 19:31:30,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:31:30,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2020-09-24 19:31:30,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:30,863 INFO L225 Difference]: With dead ends: 6534 [2020-09-24 19:31:30,863 INFO L226 Difference]: Without dead ends: 3000 [2020-09-24 19:31:30,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:31:30,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-09-24 19:31:30,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2928. [2020-09-24 19:31:30,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2020-09-24 19:31:30,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 3522 transitions. [2020-09-24 19:31:30,951 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 3522 transitions. Word has length 262 [2020-09-24 19:31:30,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:30,952 INFO L479 AbstractCegarLoop]: Abstraction has 2928 states and 3522 transitions. [2020-09-24 19:31:30,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:30,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 3522 transitions. [2020-09-24 19:31:30,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-09-24 19:31:30,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:30,967 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:31:30,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:31:30,970 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:30,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:30,970 INFO L82 PathProgramCache]: Analyzing trace with hash -365307067, now seen corresponding path program 1 times [2020-09-24 19:31:30,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:30,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834765972] [2020-09-24 19:31:30,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:31,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:31,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:31,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:32,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:32,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-09-24 19:31:32,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:31:32,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-09-24 19:31:32,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:32,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:32,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-24 19:31:32,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-09-24 19:31:32,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:32,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:32,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:32,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:32,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:32,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:32,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:31:32,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:32,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:32,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:32,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:32,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:31:32,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:32,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:32,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:32,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:32,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:32,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-24 19:31:32,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:32,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:32,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:32,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 19:31:32,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:32,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:32,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:32,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:32,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-24 19:31:32,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:32,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-09-24 19:31:32,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:32,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:32,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:32,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-24 19:31:32,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:33,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-09-24 19:31:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:33,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:33,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:33,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 19:31:33,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:33,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 19:31:33,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:33,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:33,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 19:31:33,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:33,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:33,412 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 255 proven. 73 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-24 19:31:33,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834765972] [2020-09-24 19:31:33,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:33,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:33,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931629242] [2020-09-24 19:31:33,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:33,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:33,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:33,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:33,421 INFO L87 Difference]: Start difference. First operand 2928 states and 3522 transitions. Second operand 7 states. [2020-09-24 19:31:36,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:36,671 INFO L93 Difference]: Finished difference Result 6674 states and 8119 transitions. [2020-09-24 19:31:36,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:31:36,677 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 451 [2020-09-24 19:31:36,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:36,692 INFO L225 Difference]: With dead ends: 6674 [2020-09-24 19:31:36,692 INFO L226 Difference]: Without dead ends: 3761 [2020-09-24 19:31:36,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:31:36,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states. [2020-09-24 19:31:36,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 3525. [2020-09-24 19:31:36,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3525 states. [2020-09-24 19:31:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 4208 transitions. [2020-09-24 19:31:36,782 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 4208 transitions. Word has length 451 [2020-09-24 19:31:36,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:36,783 INFO L479 AbstractCegarLoop]: Abstraction has 3525 states and 4208 transitions. [2020-09-24 19:31:36,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:36,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 4208 transitions. [2020-09-24 19:31:36,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-09-24 19:31:36,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:36,798 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:36,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:31:36,798 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:36,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:36,799 INFO L82 PathProgramCache]: Analyzing trace with hash -482114402, now seen corresponding path program 1 times [2020-09-24 19:31:36,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:36,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936571192] [2020-09-24 19:31:36,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:36,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:37,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:37,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:37,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:37,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 516 [2020-09-24 19:31:37,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:31:37,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-24 19:31:37,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:37,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:37,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-24 19:31:37,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 19:31:37,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:38,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:38,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:38,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:38,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:38,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:38,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:31:38,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:38,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:38,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:38,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:38,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:38,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:38,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:38,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:38,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 19:31:38,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:38,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 19:31:38,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:38,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:38,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:38,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 19:31:38,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:38,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114