/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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/Problem10_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:05:03,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:05:03,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:05:03,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:05:03,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:05:03,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:05:03,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:05:03,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:05:03,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:05:03,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:05:03,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:05:03,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:05:03,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:05:03,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:05:03,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:05:03,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:05:03,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:05:03,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:05:03,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:05:03,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:05:03,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:05:03,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:05:03,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:05:03,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:05:03,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:05:03,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:05:03,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:05:03,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:05:03,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:05:03,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:05:03,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:05:03,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:05:03,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:05:03,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:05:03,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:05:03,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:05:03,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:05:03,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:05:03,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:05:03,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:05:03,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:05:03,906 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 [2020-09-25 09:05:03,934 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:05:03,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:05:03,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:05:03,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:05:03,936 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:05:03,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:05:03,936 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:05:03,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:05:03,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:05:03,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:05:03,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:05:03,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:05:03,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:05:03,938 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:05:03,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:05:03,938 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:05:03,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:05:03,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:05:03,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:05:03,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:05:03,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:05:03,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:05:03,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:05:03,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:05:03,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:05:03,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:05:03,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:05:03,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:05:03,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:05:03,941 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:05:04,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:05:04,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:05:04,402 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:05:04,404 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:05:04,406 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:05:04,407 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-25 09:05:04,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ab3c341a/a1291ae502974efebfd9ba5b7d9385b2/FLAGcf2db74ab [2020-09-25 09:05:05,208 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:05:05,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-25 09:05:05,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ab3c341a/a1291ae502974efebfd9ba5b7d9385b2/FLAGcf2db74ab [2020-09-25 09:05:05,397 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ab3c341a/a1291ae502974efebfd9ba5b7d9385b2 [2020-09-25 09:05:05,414 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:05:05,421 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:05:05,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:05,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:05:05,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:05:05,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:05" (1/1) ... [2020-09-25 09:05:05,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:05, skipping insertion in model container [2020-09-25 09:05:05,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:05" (1/1) ... [2020-09-25 09:05:05,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:05:05,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:05:05,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:06,001 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:05:06,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:06,302 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:05:06,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:06 WrapperNode [2020-09-25 09:05:06,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:06,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:05:06,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:05:06,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:05:06,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:06" (1/1) ... [2020-09-25 09:05:06,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:06" (1/1) ... [2020-09-25 09:05:06,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:06" (1/1) ... [2020-09-25 09:05:06,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:06" (1/1) ... [2020-09-25 09:05:06,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:06" (1/1) ... [2020-09-25 09:05:06,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:06" (1/1) ... [2020-09-25 09:05:06,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:06" (1/1) ... [2020-09-25 09:05:06,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:05:06,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:05:06,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:05:06,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:05:06,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:06" (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 [2020-09-25 09:05:06,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:05:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:05:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:05:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:05:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:05:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:05:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:05:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:05:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:05:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:05:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:05:08,383 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:05:08,383 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:05:08,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:08 BoogieIcfgContainer [2020-09-25 09:05:08,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:05:08,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:05:08,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:05:08,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:05:08,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:05:05" (1/3) ... [2020-09-25 09:05:08,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:08, skipping insertion in model container [2020-09-25 09:05:08,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:06" (2/3) ... [2020-09-25 09:05:08,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:08, skipping insertion in model container [2020-09-25 09:05:08,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:08" (3/3) ... [2020-09-25 09:05:08,415 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label10.c [2020-09-25 09:05:08,425 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:05:08,437 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:05:08,460 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:05:08,496 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:05:08,496 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:05:08,497 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:05:08,497 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:05:08,497 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:05:08,497 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:05:08,497 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:05:08,497 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:05:08,530 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:05:08,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 09:05:08,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:08,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:08,544 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:08,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:08,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1834886135, now seen corresponding path program 1 times [2020-09-25 09:05:08,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:08,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001699951] [2020-09-25 09:05:08,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:08,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:09,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:09,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:09,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:09,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 09:05:09,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:05:09,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 653 [2020-09-25 09:05:09,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:09,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:09,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:09,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:05:09,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 09:05:09,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:05:09,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:09,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:09,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:09,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:09,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:09,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:05:09,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:09,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:09,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:09,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:09,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:05:09,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:05:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:09,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001699951] [2020-09-25 09:05:09,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:09,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:05:09,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987300808] [2020-09-25 09:05:09,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:05:09,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:09,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:05:09,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:05:09,663 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:05:11,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:11,822 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 09:05:11,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:05:11,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-25 09:05:11,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:11,848 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 09:05:11,848 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 09:05:11,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:05:11,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 09:05:11,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 09:05:11,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 09:05:11,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 09:05:11,972 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 67 [2020-09-25 09:05:11,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:11,973 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 09:05:11,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:05:11,973 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 09:05:11,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 09:05:11,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:11,982 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:11,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:05:11,982 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:11,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:11,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1798381656, now seen corresponding path program 1 times [2020-09-25 09:05:11,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:11,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179915284] [2020-09-25 09:05:11,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:12,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:12,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:12,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:12,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:12,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:13,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:17,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:17,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 09:05:17,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:05:17,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 09:05:17,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:17,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:17,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:17,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:05:17,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 09:05:17,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:05:17,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:17,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:17,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:17,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:17,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:17,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:05:17,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:17,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:17,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:17,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:17,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:05:17,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:17,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:17,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:17,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:17,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:17,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:05:17,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:17,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 09:05:17,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:17,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:17,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:17,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:17,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 09:05:17,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:17,674 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:05:17,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179915284] [2020-09-25 09:05:17,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:17,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:05:17,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791564433] [2020-09-25 09:05:17,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:05:17,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:17,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:05:17,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:17,682 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 09:05:19,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:19,447 INFO L93 Difference]: Finished difference Result 1226 states and 1532 transitions. [2020-09-25 09:05:19,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:05:19,447 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-09-25 09:05:19,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:19,454 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 09:05:19,455 INFO L226 Difference]: Without dead ends: 697 [2020-09-25 09:05:19,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:19,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-09-25 09:05:19,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 695. [2020-09-25 09:05:19,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 09:05:19,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 09:05:19,508 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 146 [2020-09-25 09:05:19,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:19,509 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 09:05:19,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:05:19,510 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 09:05:19,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 09:05:19,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:19,529 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:19,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:05:19,529 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:19,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:19,531 INFO L82 PathProgramCache]: Analyzing trace with hash 196926794, now seen corresponding path program 1 times [2020-09-25 09:05:19,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:19,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031895346] [2020-09-25 09:05:19,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:19,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:19,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:19,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:20,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:20,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:23,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:23,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 09:05:23,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:05:23,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4001 [2020-09-25 09:05:23,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:23,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 09:05:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 09:05:23,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:23,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:23,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:23,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:23,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:23,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:23,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:05:23,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:23,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:23,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:23,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:23,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:23,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:23,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:05:23,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:23,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 09:05:23,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:23,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 09:05:23,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:23,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031895346] [2020-09-25 09:05:23,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:23,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:05:23,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003378331] [2020-09-25 09:05:23,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:05:23,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:23,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:05:23,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:05:23,854 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 5 states. [2020-09-25 09:05:25,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:25,662 INFO L93 Difference]: Finished difference Result 1531 states and 1965 transitions. [2020-09-25 09:05:25,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:05:25,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 09:05:25,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:25,670 INFO L225 Difference]: With dead ends: 1531 [2020-09-25 09:05:25,670 INFO L226 Difference]: Without dead ends: 1001 [2020-09-25 09:05:25,672 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 [2020-09-25 09:05:25,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-09-25 09:05:25,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 999. [2020-09-25 09:05:25,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-09-25 09:05:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1220 transitions. [2020-09-25 09:05:25,711 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1220 transitions. Word has length 156 [2020-09-25 09:05:25,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:25,718 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1220 transitions. [2020-09-25 09:05:25,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:05:25,718 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1220 transitions. [2020-09-25 09:05:25,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 09:05:25,726 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:25,727 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:25,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:05:25,727 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:25,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:25,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1223684533, now seen corresponding path program 1 times [2020-09-25 09:05:25,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:25,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433383787] [2020-09-25 09:05:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:25,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:25,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:26,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:26,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:29,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:30,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:30,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-25 09:05:30,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:05:30,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 09:05:30,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:30,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:30,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:05:30,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:05:30,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-09-25 09:05:30,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:31,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:31,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:31,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:31,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:31,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:31,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:05:31,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:31,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:31,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:31,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:31,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:05:31,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:31,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:31,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:31,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:31,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:31,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 09:05:31,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:31,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-09-25 09:05:31,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:31,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:31,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:31,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:31,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 09:05:31,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:32,186 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:32,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433383787] [2020-09-25 09:05:32,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:32,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 09:05:32,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884939991] [2020-09-25 09:05:32,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 09:05:32,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:32,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 09:05:32,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:05:32,191 INFO L87 Difference]: Start difference. First operand 999 states and 1220 transitions. Second operand 12 states. [2020-09-25 09:05:35,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:35,435 INFO L93 Difference]: Finished difference Result 2179 states and 2770 transitions. [2020-09-25 09:05:35,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:05:35,436 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 213 [2020-09-25 09:05:35,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:35,446 INFO L225 Difference]: With dead ends: 2179 [2020-09-25 09:05:35,446 INFO L226 Difference]: Without dead ends: 1303 [2020-09-25 09:05:35,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2020-09-25 09:05:35,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2020-09-25 09:05:35,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1291. [2020-09-25 09:05:35,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1291 states. [2020-09-25 09:05:35,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1535 transitions. [2020-09-25 09:05:35,505 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1535 transitions. Word has length 213 [2020-09-25 09:05:35,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:35,506 INFO L479 AbstractCegarLoop]: Abstraction has 1291 states and 1535 transitions. [2020-09-25 09:05:35,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 09:05:35,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1535 transitions. [2020-09-25 09:05:35,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-09-25 09:05:35,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:35,514 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:05:35,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:05:35,514 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:35,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:35,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1559677159, now seen corresponding path program 1 times [2020-09-25 09:05:35,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:35,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198328233] [2020-09-25 09:05:35,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:35,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:35,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:35,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:36,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:37,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:38,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:38,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:40,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:40,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:40,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-09-25 09:05:40,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:05:40,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 09:05:40,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:40,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:40,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:40,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:05:40,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-09-25 09:05:40,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:40,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:40,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:40,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:40,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:40,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:40,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 09:05:40,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:40,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:40,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:40,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:40,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:05:40,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:40,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:40,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:40,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:40,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:40,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:05:40,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:40,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 09:05:40,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:40,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:40,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:40,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:40,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 09:05:40,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:41,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:05:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:41,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:41,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:41,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:41,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 09:05:41,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:41,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-09-25 09:05:41,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:41,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:41,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:41,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:41,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 09:05:41,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-25 09:05:41,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198328233] [2020-09-25 09:05:41,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:41,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:05:41,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488301482] [2020-09-25 09:05:41,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:05:41,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:41,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:05:41,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:05:41,811 INFO L87 Difference]: Start difference. First operand 1291 states and 1535 transitions. Second operand 10 states. [2020-09-25 09:05:43,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:43,848 INFO L93 Difference]: Finished difference Result 2438 states and 2918 transitions. [2020-09-25 09:05:43,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:05:43,849 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 286 [2020-09-25 09:05:43,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:43,856 INFO L225 Difference]: With dead ends: 2438 [2020-09-25 09:05:43,857 INFO L226 Difference]: Without dead ends: 1289 [2020-09-25 09:05:43,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:05:43,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2020-09-25 09:05:43,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1287. [2020-09-25 09:05:43,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1287 states. [2020-09-25 09:05:43,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1528 transitions. [2020-09-25 09:05:43,900 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1528 transitions. Word has length 286 [2020-09-25 09:05:43,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:43,900 INFO L479 AbstractCegarLoop]: Abstraction has 1287 states and 1528 transitions. [2020-09-25 09:05:43,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:05:43,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1528 transitions. [2020-09-25 09:05:43,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-09-25 09:05:43,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:43,907 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:43,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:05:43,908 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:43,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:43,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1169597642, now seen corresponding path program 1 times [2020-09-25 09:05:43,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:43,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788312184] [2020-09-25 09:05:43,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:44,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:44,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:44,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:44,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:45,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:46,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:46,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:47,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:47,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:49,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-09-25 09:05:49,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:05:49,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 09:05:49,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:49,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:49,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:49,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:05:49,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 09:05:49,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:49,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:49,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:49,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:49,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:49,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:49,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:05:49,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:49,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:49,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:49,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:49,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:49,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:49,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:49,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:49,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:05:49,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:49,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 09:05:49,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:49,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:49,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:49,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:49,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:05:49,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:49,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:05:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:49,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:49,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:49,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 09:05:49,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:49,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-25 09:05:49,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:49,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 09:05:49,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:49,692 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:05:49,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788312184] [2020-09-25 09:05:49,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:49,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:05:49,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646262296] [2020-09-25 09:05:49,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:05:49,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:49,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:05:49,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:49,696 INFO L87 Difference]: Start difference. First operand 1287 states and 1528 transitions. Second operand 8 states.