/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=0.6 --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/Problem01_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:42:10,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:42:10,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:42:10,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:42:10,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:42:10,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:42:10,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:42:10,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:42:10,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:42:10,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:42:10,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:42:10,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:42:10,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:42:10,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:42:10,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:42:10,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:42:10,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:42:10,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:42:10,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:42:10,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:42:10,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:42:10,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:42:10,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:42:10,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:42:10,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:42:10,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:42:10,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:42:10,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:42:10,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:42:10,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:42:10,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:42:10,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:42:10,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:42:10,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:42:10,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:42:10,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:42:10,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:42:10,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:42:10,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:42:10,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:42:10,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:42:10,433 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 06:42:10,459 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:42:10,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:42:10,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:42:10,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:42:10,461 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:42:10,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:42:10,462 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:42:10,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:42:10,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:42:10,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:42:10,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:42:10,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:42:10,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:42:10,463 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:42:10,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:42:10,464 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:42:10,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:42:10,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:42:10,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:42:10,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:42:10,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:42:10,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:42:10,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:42:10,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:42:10,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:42:10,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:42:10,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:42:10,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:42:10,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:42:10,467 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:42:10,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:42:10,955 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:42:10,960 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:42:10,961 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:42:10,962 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:42:10,963 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-25 06:42:11,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/694d6e550/3664faa8627848839c22faee7dfba54e/FLAGc28b18651 [2020-09-25 06:42:11,637 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:42:11,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-25 06:42:11,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/694d6e550/3664faa8627848839c22faee7dfba54e/FLAGc28b18651 [2020-09-25 06:42:11,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/694d6e550/3664faa8627848839c22faee7dfba54e [2020-09-25 06:42:11,875 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:42:11,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:42:11,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:11,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:42:11,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:42:11,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:11" (1/1) ... [2020-09-25 06:42:11,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:11, skipping insertion in model container [2020-09-25 06:42:11,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:11" (1/1) ... [2020-09-25 06:42:11,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:42:11,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:42:12,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:12,435 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:42:12,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:12,704 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:42:12,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:12 WrapperNode [2020-09-25 06:42:12,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:12,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:42:12,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:42:12,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:42:12,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:12" (1/1) ... [2020-09-25 06:42:12,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:12" (1/1) ... [2020-09-25 06:42:12,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:12" (1/1) ... [2020-09-25 06:42:12,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:12" (1/1) ... [2020-09-25 06:42:12,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:12" (1/1) ... [2020-09-25 06:42:12,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:12" (1/1) ... [2020-09-25 06:42:12,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:12" (1/1) ... [2020-09-25 06:42:12,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:42:12,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:42:12,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:42:12,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:42:12,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:12" (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 06:42:12,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:42:12,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:42:12,933 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:42:12,933 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:42:12,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:42:12,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:42:12,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:42:12,934 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:42:12,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:42:12,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:42:12,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:42:14,271 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:42:14,271 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:42:14,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:14 BoogieIcfgContainer [2020-09-25 06:42:14,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:42:14,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:42:14,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:42:14,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:42:14,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:42:11" (1/3) ... [2020-09-25 06:42:14,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:42:14, skipping insertion in model container [2020-09-25 06:42:14,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:12" (2/3) ... [2020-09-25 06:42:14,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:42:14, skipping insertion in model container [2020-09-25 06:42:14,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:14" (3/3) ... [2020-09-25 06:42:14,290 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label17.c [2020-09-25 06:42:14,302 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:42:14,314 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:42:14,337 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:42:14,371 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:42:14,371 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:42:14,372 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:42:14,372 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:42:14,372 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:42:14,372 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:42:14,372 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:42:14,372 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:42:14,410 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:42:14,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 06:42:14,448 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:14,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:14,450 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:14,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:14,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1930932209, now seen corresponding path program 1 times [2020-09-25 06:42:14,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:14,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523682103] [2020-09-25 06:42:14,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:14,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:15,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:15,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:16,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:19,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:19,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:19,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:19,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:19,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 06:42:19,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:42:19,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-09-25 06:42:19,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:19,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:19,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:19,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:42:19,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 06:42:19,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:42:20,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:20,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:20,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:20,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:20,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:20,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 06:42:20,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:20,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:42:20,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:20,100 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 06:42:20,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523682103] [2020-09-25 06:42:20,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:42:20,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:42:20,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931470155] [2020-09-25 06:42:20,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:42:20,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:20,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:42:20,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:42:20,132 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 06:42:22,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:22,226 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 06:42:22,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:42:22,229 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-09-25 06:42:22,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:22,264 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 06:42:22,265 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 06:42:22,276 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 06:42:22,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 06:42:22,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 06:42:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 06:42:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 06:42:22,403 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 144 [2020-09-25 06:42:22,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:22,404 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 06:42:22,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:42:22,405 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 06:42:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 06:42:22,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:22,415 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:22,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:42:22,416 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:22,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:22,417 INFO L82 PathProgramCache]: Analyzing trace with hash -838420896, now seen corresponding path program 1 times [2020-09-25 06:42:22,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:22,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244291965] [2020-09-25 06:42:22,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:22,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:22,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:22,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:23,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:23,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:24,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:24,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:27,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:27,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 06:42:27,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:42:27,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 06:42:27,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:27,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:27,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:42:27,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 06:42:27,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 06:42:27,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:42:27,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:27,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:27,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:27,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:27,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:27,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:42:27,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:27,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:27,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:27,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:27,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:27,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 06:42:27,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:27,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:27,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:27,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:27,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:27,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 06:42:27,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:27,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:27,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:42:27,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:27,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:42:27,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:42:28,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244291965] [2020-09-25 06:42:28,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:28,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:42:28,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957212668] [2020-09-25 06:42:28,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:42:28,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:28,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:42:28,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:42:28,013 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 9 states. [2020-09-25 06:42:32,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:32,547 INFO L93 Difference]: Finished difference Result 2178 states and 2832 transitions. [2020-09-25 06:42:32,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 06:42:32,548 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 165 [2020-09-25 06:42:32,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:32,561 INFO L225 Difference]: With dead ends: 2178 [2020-09-25 06:42:32,562 INFO L226 Difference]: Without dead ends: 1413 [2020-09-25 06:42:32,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:42:32,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2020-09-25 06:42:32,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1375. [2020-09-25 06:42:32,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1375 states. [2020-09-25 06:42:32,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 1554 transitions. [2020-09-25 06:42:32,653 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 1554 transitions. Word has length 165 [2020-09-25 06:42:32,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:32,653 INFO L479 AbstractCegarLoop]: Abstraction has 1375 states and 1554 transitions. [2020-09-25 06:42:32,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:42:32,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 1554 transitions. [2020-09-25 06:42:32,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 06:42:32,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:32,662 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:32,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:42:32,663 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:32,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:32,663 INFO L82 PathProgramCache]: Analyzing trace with hash -770413602, now seen corresponding path program 1 times [2020-09-25 06:42:32,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:32,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833255102] [2020-09-25 06:42:32,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:32,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:32,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:33,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:34,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:34,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:34,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:35,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:36,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:37,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:37,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 06:42:37,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:42:37,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:42:37,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:37,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:37,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:37,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:42:37,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 06:42:37,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:37,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:37,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:37,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:37,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:37,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:37,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:42:37,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:37,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:37,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:37,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:37,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:37,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:37,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:37,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:37,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:37,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:37,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:37,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:42:37,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:37,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:37,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:42:37,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:42:38,091 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:42:38,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833255102] [2020-09-25 06:42:38,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:38,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:42:38,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443923468] [2020-09-25 06:42:38,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:42:38,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:38,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:42:38,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:42:38,098 INFO L87 Difference]: Start difference. First operand 1375 states and 1554 transitions. Second operand 5 states. [2020-09-25 06:42:40,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:40,364 INFO L93 Difference]: Finished difference Result 3228 states and 3749 transitions. [2020-09-25 06:42:40,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:42:40,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-25 06:42:40,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:40,383 INFO L225 Difference]: With dead ends: 3228 [2020-09-25 06:42:40,383 INFO L226 Difference]: Without dead ends: 1719 [2020-09-25 06:42:40,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:42:40,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2020-09-25 06:42:40,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1654. [2020-09-25 06:42:40,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1654 states. [2020-09-25 06:42:40,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 1910 transitions. [2020-09-25 06:42:40,489 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 1910 transitions. Word has length 165 [2020-09-25 06:42:40,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:40,492 INFO L479 AbstractCegarLoop]: Abstraction has 1654 states and 1910 transitions. [2020-09-25 06:42:40,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:42:40,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 1910 transitions. [2020-09-25 06:42:40,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 06:42:40,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:40,503 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:40,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:42:40,505 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:40,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:40,505 INFO L82 PathProgramCache]: Analyzing trace with hash -302798244, now seen corresponding path program 1 times [2020-09-25 06:42:40,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:40,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961788418] [2020-09-25 06:42:40,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:40,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:40,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:40,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:40,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:41,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:41,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:41,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:41,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:42,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:45,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:45,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 06:42:45,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:42:45,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 06:42:45,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:45,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:45,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:45,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:42:45,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:42:45,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:45,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:45,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:45,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:45,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:45,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:45,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:42:45,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:45,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:42:45,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:45,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:45,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:45,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:45,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:42:45,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:45,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 06:42:45,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:45,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:45,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:42:45,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:45,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:42:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:45,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:45,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:45,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:42:45,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:45,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:42:45,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:45,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:45,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:45,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 06:42:45,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:45,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:45,900 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:42:45,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961788418] [2020-09-25 06:42:45,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:45,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:42:45,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533159069] [2020-09-25 06:42:45,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:45,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:45,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:45,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:45,903 INFO L87 Difference]: Start difference. First operand 1654 states and 1910 transitions. Second operand 7 states. [2020-09-25 06:42:48,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:48,090 INFO L93 Difference]: Finished difference Result 3992 states and 4802 transitions. [2020-09-25 06:42:48,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:42:48,090 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-09-25 06:42:48,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:48,103 INFO L225 Difference]: With dead ends: 3992 [2020-09-25 06:42:48,103 INFO L226 Difference]: Without dead ends: 2362 [2020-09-25 06:42:48,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:42:48,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2020-09-25 06:42:48,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2266. [2020-09-25 06:42:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2266 states. [2020-09-25 06:42:48,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2266 states to 2266 states and 2666 transitions. [2020-09-25 06:42:48,179 INFO L78 Accepts]: Start accepts. Automaton has 2266 states and 2666 transitions. Word has length 189 [2020-09-25 06:42:48,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:48,179 INFO L479 AbstractCegarLoop]: Abstraction has 2266 states and 2666 transitions. [2020-09-25 06:42:48,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:42:48,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2266 states and 2666 transitions. [2020-09-25 06:42:48,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 06:42:48,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:48,190 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:48,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:42:48,190 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:48,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:48,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1152735310, now seen corresponding path program 1 times [2020-09-25 06:42:48,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:48,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757866613] [2020-09-25 06:42:48,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:48,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:48,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:48,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:49,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:52,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:52,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:52,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:52,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:52,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:53,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:53,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-25 06:42:53,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:42:53,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 06:42:53,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:53,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:53,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:53,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:42:53,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:42:53,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:53,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:53,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:53,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:53,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:53,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:53,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:42:53,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:53,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:53,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:53,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:53,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:53,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:53,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:53,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:53,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:42:53,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:53,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:42:53,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:53,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:42:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:53,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:53,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:53,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 06:42:53,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:53,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 06:42:53,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:53,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:53,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:53,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:53,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 06:42:53,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:42:53,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757866613] [2020-09-25 06:42:53,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:53,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:42:53,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005162448] [2020-09-25 06:42:53,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:53,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:53,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:53,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:53,606 INFO L87 Difference]: Start difference. First operand 2266 states and 2666 transitions. Second operand 7 states. [2020-09-25 06:42:56,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:56,091 INFO L93 Difference]: Finished difference Result 4837 states and 5841 transitions. [2020-09-25 06:42:56,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:42:56,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-09-25 06:42:56,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:56,114 INFO L225 Difference]: With dead ends: 4837 [2020-09-25 06:42:56,114 INFO L226 Difference]: Without dead ends: 2424 [2020-09-25 06:42:56,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:42:56,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2020-09-25 06:42:56,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2278. [2020-09-25 06:42:56,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2278 states. [2020-09-25 06:42:56,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 2663 transitions. [2020-09-25 06:42:56,210 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 2663 transitions. Word has length 208 [2020-09-25 06:42:56,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:56,210 INFO L479 AbstractCegarLoop]: Abstraction has 2278 states and 2663 transitions. [2020-09-25 06:42:56,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:42:56,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 2663 transitions. [2020-09-25 06:42:56,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 06:42:56,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:56,221 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:56,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:42:56,222 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:56,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:56,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1420661867, now seen corresponding path program 1 times [2020-09-25 06:42:56,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:56,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485665116] [2020-09-25 06:42:56,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:56,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:56,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:56,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:57,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking...