/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:27:25,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:27:25,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:27:25,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:27:25,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:27:25,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:27:25,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:27:25,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:27:25,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:27:25,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:27:25,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:27:25,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:27:25,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:27:25,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:27:25,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:27:25,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:27:25,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:27:25,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:27:25,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:27:25,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:27:25,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:27:25,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:27:25,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:27:25,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:27:25,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:27:25,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:27:25,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:27:25,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:27:25,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:27:25,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:27:25,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:27:25,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:27:25,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:27:25,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:27:25,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:27:25,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:27:25,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:27:25,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:27:25,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:27:25,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:27:25,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:27:25,349 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 12:27:25,376 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:27:25,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:27:25,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:27:25,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:27:25,379 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:27:25,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:27:25,379 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:27:25,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:27:25,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:27:25,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:27:25,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:27:25,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:27:25,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:27:25,381 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:27:25,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:27:25,381 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:27:25,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:27:25,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:27:25,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:27:25,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:27:25,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:27:25,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:27:25,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:27:25,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:27:25,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:27:25,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:27:25,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:27:25,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:27:25,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:27:25,384 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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:27:25,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:27:25,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:27:25,885 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:27:25,888 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:27:25,889 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:27:25,890 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-25 12:27:25,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/874363771/2f5ceeb4d58b4f8b97077c08c36b02c3/FLAG9ef71a9f9 [2020-09-25 12:27:26,664 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:27:26,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-25 12:27:26,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/874363771/2f5ceeb4d58b4f8b97077c08c36b02c3/FLAG9ef71a9f9 [2020-09-25 12:27:26,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/874363771/2f5ceeb4d58b4f8b97077c08c36b02c3 [2020-09-25 12:27:26,911 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:27:26,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:27:26,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:26,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:27:26,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:27:26,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:26" (1/1) ... [2020-09-25 12:27:26,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697b2ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:26, skipping insertion in model container [2020-09-25 12:27:26,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:26" (1/1) ... [2020-09-25 12:27:26,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:27:26,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:27:27,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:27,526 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:27:27,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:27,754 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:27:27,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:27 WrapperNode [2020-09-25 12:27:27,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:27,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:27:27,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:27:27,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:27:27,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:27" (1/1) ... [2020-09-25 12:27:27,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:27" (1/1) ... [2020-09-25 12:27:27,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:27" (1/1) ... [2020-09-25 12:27:27,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:27" (1/1) ... [2020-09-25 12:27:27,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:27" (1/1) ... [2020-09-25 12:27:27,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:27" (1/1) ... [2020-09-25 12:27:27,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:27" (1/1) ... [2020-09-25 12:27:27,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:27:27,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:27:27,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:27:27,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:27:27,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:27" (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 12:27:27,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:27:27,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:27:27,986 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:27:27,986 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:27:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:27:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:27:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:27:27,988 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:27:27,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:27:27,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:27:27,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:27:29,530 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:27:29,531 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:27:29,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:29 BoogieIcfgContainer [2020-09-25 12:27:29,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:27:29,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:27:29,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:27:29,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:27:29,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:27:26" (1/3) ... [2020-09-25 12:27:29,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6639092e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:29, skipping insertion in model container [2020-09-25 12:27:29,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:27" (2/3) ... [2020-09-25 12:27:29,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6639092e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:29, skipping insertion in model container [2020-09-25 12:27:29,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:29" (3/3) ... [2020-09-25 12:27:29,551 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label43.c [2020-09-25 12:27:29,563 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:27:29,575 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:27:29,600 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:27:29,637 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:27:29,637 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:27:29,637 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:27:29,637 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:27:29,638 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:27:29,638 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:27:29,638 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:27:29,638 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:27:29,671 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:27:29,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 12:27:29,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:29,684 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] [2020-09-25 12:27:29,684 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:29,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:29,693 INFO L82 PathProgramCache]: Analyzing trace with hash -495691305, now seen corresponding path program 1 times [2020-09-25 12:27:29,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:29,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390287377] [2020-09-25 12:27:29,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:29,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:30,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:30,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:30,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:30,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 12:27:30,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:27:30,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 827 [2020-09-25 12:27:30,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:30,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:30,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:30,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:27:30,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 12:27:30,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:27:30,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:30,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:30,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:30,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:30,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:30,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:27:30,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:30,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:30,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:30,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:30,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:27:30,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:30,921 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 12:27:30,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390287377] [2020-09-25 12:27:30,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:30,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:27:30,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633757787] [2020-09-25 12:27:30,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:27:30,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:30,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:27:30,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:27:30,960 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:27:33,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:33,046 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 12:27:33,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:27:33,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 12:27:33,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:33,078 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 12:27:33,078 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 12:27:33,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:27:33,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 12:27:33,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 12:27:33,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 12:27:33,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 12:27:33,192 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 54 [2020-09-25 12:27:33,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:33,193 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 12:27:33,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:27:33,193 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 12:27:33,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 12:27:33,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:33,200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:33,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:27:33,201 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:33,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:33,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1783140025, now seen corresponding path program 1 times [2020-09-25 12:27:33,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:33,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755842122] [2020-09-25 12:27:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:33,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:33,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:33,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:33,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:33,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:37,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:37,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 12:27:37,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:27:37,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4626 [2020-09-25 12:27:37,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:37,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:37,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:27:37,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:27:37,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 12:27:37,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:37,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:38,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:38,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:38,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:38,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:38,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:27:38,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:38,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:38,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:38,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:38,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:27:38,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:38,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:38,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:38,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:38,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:38,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:27:38,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:38,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 12:27:38,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:38,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:38,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:38,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:27:38,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:27:38,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755842122] [2020-09-25 12:27:38,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:38,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:27:38,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736955149] [2020-09-25 12:27:38,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:27:38,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:38,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:27:38,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:27:38,301 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 6 states. [2020-09-25 12:27:40,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:40,545 INFO L93 Difference]: Finished difference Result 1165 states and 1486 transitions. [2020-09-25 12:27:40,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:27:40,546 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-09-25 12:27:40,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:40,555 INFO L225 Difference]: With dead ends: 1165 [2020-09-25 12:27:40,555 INFO L226 Difference]: Without dead ends: 1163 [2020-09-25 12:27:40,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:27:40,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-09-25 12:27:40,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 851. [2020-09-25 12:27:40,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2020-09-25 12:27:40,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1112 transitions. [2020-09-25 12:27:40,621 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1112 transitions. Word has length 133 [2020-09-25 12:27:40,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:40,622 INFO L479 AbstractCegarLoop]: Abstraction has 851 states and 1112 transitions. [2020-09-25 12:27:40,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:27:40,622 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1112 transitions. [2020-09-25 12:27:40,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 12:27:40,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:40,629 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:40,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:27:40,631 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:40,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:40,632 INFO L82 PathProgramCache]: Analyzing trace with hash -412359152, now seen corresponding path program 1 times [2020-09-25 12:27:40,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:40,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305361248] [2020-09-25 12:27:40,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:40,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:40,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:40,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:41,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:41,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:42,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:45,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:45,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 12:27:45,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:27:45,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 12:27:45,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:45,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:45,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:45,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:45,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 12:27:45,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:45,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:45,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:45,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:45,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:45,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:45,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:27:45,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:45,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:45,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:45,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:45,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:45,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:45,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:45,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:46,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:46,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:27:46,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:46,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 12:27:46,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:46,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:46,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:27:46,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:46,165 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:46,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305361248] [2020-09-25 12:27:46,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:46,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:27:46,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742651779] [2020-09-25 12:27:46,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:27:46,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:46,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:27:46,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:46,171 INFO L87 Difference]: Start difference. First operand 851 states and 1112 transitions. Second operand 7 states. [2020-09-25 12:27:48,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:48,059 INFO L93 Difference]: Finished difference Result 1861 states and 2427 transitions. [2020-09-25 12:27:48,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:27:48,059 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-09-25 12:27:48,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:48,066 INFO L225 Difference]: With dead ends: 1861 [2020-09-25 12:27:48,066 INFO L226 Difference]: Without dead ends: 1025 [2020-09-25 12:27:48,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:27:48,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-09-25 12:27:48,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1011. [2020-09-25 12:27:48,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-09-25 12:27:48,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1299 transitions. [2020-09-25 12:27:48,109 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1299 transitions. Word has length 137 [2020-09-25 12:27:48,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:48,110 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1299 transitions. [2020-09-25 12:27:48,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:27:48,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1299 transitions. [2020-09-25 12:27:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 12:27:48,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:48,114 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:48,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:27:48,114 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:48,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:48,115 INFO L82 PathProgramCache]: Analyzing trace with hash -109496539, now seen corresponding path program 1 times [2020-09-25 12:27:48,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:48,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836528486] [2020-09-25 12:27:48,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:48,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:48,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:48,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:48,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:49,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:49,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:50,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:50,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 12:27:50,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:27:50,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2640 [2020-09-25 12:27:50,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:50,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:50,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:50,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:50,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 12:27:50,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:27:50,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:50,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:50,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:50,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:50,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:50,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:27:50,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:50,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:50,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:50,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:50,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:50,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:51,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:51,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:51,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:51,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 12:27:51,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:51,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:51,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:51,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836528486] [2020-09-25 12:27:51,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:51,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:27:51,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041200351] [2020-09-25 12:27:51,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:27:51,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:51,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:27:51,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:27:51,178 INFO L87 Difference]: Start difference. First operand 1011 states and 1299 transitions. Second operand 8 states. [2020-09-25 12:27:54,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:54,673 INFO L93 Difference]: Finished difference Result 3090 states and 4259 transitions. [2020-09-25 12:27:54,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:27:54,673 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 143 [2020-09-25 12:27:54,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:54,692 INFO L225 Difference]: With dead ends: 3090 [2020-09-25 12:27:54,692 INFO L226 Difference]: Without dead ends: 2244 [2020-09-25 12:27:54,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:27:54,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2020-09-25 12:27:54,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 1835. [2020-09-25 12:27:54,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1835 states. [2020-09-25 12:27:54,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2419 transitions. [2020-09-25 12:27:54,795 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2419 transitions. Word has length 143 [2020-09-25 12:27:54,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:54,797 INFO L479 AbstractCegarLoop]: Abstraction has 1835 states and 2419 transitions. [2020-09-25 12:27:54,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:27:54,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2419 transitions. [2020-09-25 12:27:54,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 12:27:54,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:54,804 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:27:54,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:27:54,804 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:54,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:54,805 INFO L82 PathProgramCache]: Analyzing trace with hash 2021439648, now seen corresponding path program 1 times [2020-09-25 12:27:54,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:54,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380574456] [2020-09-25 12:27:54,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:54,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:54,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:55,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:55,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:55,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:55,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:59,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:59,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 12:27:59,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:27:59,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:27:59,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:59,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:27:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:27:59,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-25 12:27:59,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:00,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:00,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:00,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:00,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:00,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:00,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:28:00,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:00,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:00,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:28:00,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:00,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:28:00,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:00,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:00,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:00,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:00,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:00,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:28:00,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:00,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 12:28:00,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:00,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:00,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:00,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:00,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:28:00,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:00,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:28:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:00,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:00,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:00,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:00,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:28:00,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:00,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-09-25 12:28:00,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:00,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:00,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:00,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:00,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 12:28:00,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 77 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 12:28:00,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380574456] [2020-09-25 12:28:00,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:00,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:28:00,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286541668] [2020-09-25 12:28:00,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:28:00,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:00,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:28:00,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:28:00,922 INFO L87 Difference]: Start difference. First operand 1835 states and 2419 transitions. Second operand 10 states. [2020-09-25 12:28:04,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:04,200 INFO L93 Difference]: Finished difference Result 4328 states and 5970 transitions. [2020-09-25 12:28:04,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:28:04,201 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 216 [2020-09-25 12:28:04,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:04,216 INFO L225 Difference]: With dead ends: 4328 [2020-09-25 12:28:04,216 INFO L226 Difference]: Without dead ends: 2639 [2020-09-25 12:28:04,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:28:04,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2020-09-25 12:28:04,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2298. [2020-09-25 12:28:04,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2298 states. [2020-09-25 12:28:04,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 2977 transitions. [2020-09-25 12:28:04,313 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 2977 transitions. Word has length 216 [2020-09-25 12:28:04,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:04,313 INFO L479 AbstractCegarLoop]: Abstraction has 2298 states and 2977 transitions. [2020-09-25 12:28:04,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:28:04,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 2977 transitions. [2020-09-25 12:28:04,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 12:28:04,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:04,320 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:28:04,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:28:04,320 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:04,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:04,320 INFO L82 PathProgramCache]: Analyzing trace with hash 480632245, now seen corresponding path program 1 times [2020-09-25 12:28:04,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:04,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145938717] [2020-09-25 12:28:04,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:04,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:05,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:06,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:07,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:08,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:09,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:09,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 12:28:09,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:28:09,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 12:28:09,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:09,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:09,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:28:09,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:28:09,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 12:28:09,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:09,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:09,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:09,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:09,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:09,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:09,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:28:09,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:09,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:09,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:28:09,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:09,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:09,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:09,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:09,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:28:09,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:09,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 12:28:09,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:09,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:09,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:09,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:09,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:28:09,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:09,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:28:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:09,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:09,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:09,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:28:09,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:09,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 12:28:09,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:09,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:09,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:09,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:09,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:28:09,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:10,149 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 142 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:28:10,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145938717] [2020-09-25 12:28:10,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:10,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:28:10,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022108428] [2020-09-25 12:28:10,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:28:10,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:10,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:28:10,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:28:10,154 INFO L87 Difference]: Start difference. First operand 2298 states and 2977 transitions. Second operand 10 states.