/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=0.5 --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_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:42:11,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:42:11,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:42:11,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:42:11,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:42:11,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:42:11,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:42:11,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:42:11,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:42:11,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:42:11,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:42:11,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:42:11,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:42:11,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:42:11,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:42:11,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:42:11,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:42:11,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:42:11,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:42:11,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:42:11,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:42:11,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:42:11,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:42:11,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:42:11,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:42:11,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:42:11,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:42:11,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:42:11,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:42:11,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:42:11,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:42:11,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:42:11,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:42:11,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:42:11,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:42:11,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:42:11,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:42:11,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:42:11,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:42:11,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:42:11,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:42:11,817 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 14:42:11,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:42:11,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:42:11,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:42:11,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:42:11,863 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:42:11,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:42:11,864 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:42:11,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:42:11,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:42:11,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:42:11,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:42:11,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:42:11,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:42:11,866 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:42:11,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:42:11,867 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:42:11,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:42:11,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:42:11,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:42:11,868 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:42:11,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:42:11,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:42:11,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:42:11,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:42:11,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:42:11,869 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:42:11,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:42:11,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:42:11,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:42:11,870 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:42:12,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:42:12,327 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:42:12,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:42:12,334 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:42:12,334 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:42:12,335 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 14:42:12,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6899cf0d4/cd984739d5df4ce98c9be1dc4aa2d985/FLAG2347b0b0d [2020-09-25 14:42:13,115 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:42:13,118 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 14:42:13,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6899cf0d4/cd984739d5df4ce98c9be1dc4aa2d985/FLAG2347b0b0d [2020-09-25 14:42:13,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6899cf0d4/cd984739d5df4ce98c9be1dc4aa2d985 [2020-09-25 14:42:13,343 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:42:13,352 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:42:13,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:13,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:42:13,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:42:13,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:13" (1/1) ... [2020-09-25 14:42:13,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@156ed3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:13, skipping insertion in model container [2020-09-25 14:42:13,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:13" (1/1) ... [2020-09-25 14:42:13,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:42:13,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:42:13,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:13,932 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:42:14,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:14,154 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:42:14,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:14 WrapperNode [2020-09-25 14:42:14,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:14,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:42:14,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:42:14,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:42:14,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:14" (1/1) ... [2020-09-25 14:42:14,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:14" (1/1) ... [2020-09-25 14:42:14,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:14" (1/1) ... [2020-09-25 14:42:14,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:14" (1/1) ... [2020-09-25 14:42:14,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:14" (1/1) ... [2020-09-25 14:42:14,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:14" (1/1) ... [2020-09-25 14:42:14,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:14" (1/1) ... [2020-09-25 14:42:14,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:42:14,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:42:14,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:42:14,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:42:14,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:14" (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 14:42:14,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:42:14,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:42:14,389 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:42:14,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:42:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:42:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:42:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:42:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:42:14,390 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:42:14,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:42:14,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:42:15,958 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:42:15,959 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:42:15,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:15 BoogieIcfgContainer [2020-09-25 14:42:15,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:42:15,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:42:15,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:42:15,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:42:15,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:42:13" (1/3) ... [2020-09-25 14:42:15,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c6ba29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:15, skipping insertion in model container [2020-09-25 14:42:15,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:14" (2/3) ... [2020-09-25 14:42:15,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c6ba29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:15, skipping insertion in model container [2020-09-25 14:42:15,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:15" (3/3) ... [2020-09-25 14:42:15,981 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label33.c [2020-09-25 14:42:15,995 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:42:16,007 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:42:16,030 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:42:16,067 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:42:16,068 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:42:16,068 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:42:16,068 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:42:16,068 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:42:16,068 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:42:16,069 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:42:16,069 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:42:16,102 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:42:16,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 14:42:16,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:16,115 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] [2020-09-25 14:42:16,115 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:16,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:16,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1274135065, now seen corresponding path program 1 times [2020-09-25 14:42:16,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:16,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456322911] [2020-09-25 14:42:16,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:16,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:16,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:16,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:17,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:17,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 14:42:17,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:42:17,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1428 [2020-09-25 14:42:17,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:17,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:17,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:17,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:42:17,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 14:42:17,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:42:17,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:17,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:17,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:17,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:17,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:17,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 14:42:17,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:17,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:42:17,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:17,965 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 14:42:17,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456322911] [2020-09-25 14:42:17,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:17,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:42:17,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69056566] [2020-09-25 14:42:17,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:42:17,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:17,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:42:17,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:42:18,002 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:42:20,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:20,093 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 14:42:20,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:42:20,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-09-25 14:42:20,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:20,119 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 14:42:20,120 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 14:42:20,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:42:20,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 14:42:20,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 14:42:20,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 14:42:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 14:42:20,225 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 63 [2020-09-25 14:42:20,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:20,226 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 14:42:20,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:42:20,226 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 14:42:20,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 14:42:20,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:20,234 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:20,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:42:20,235 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:20,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:20,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1742825944, now seen corresponding path program 1 times [2020-09-25 14:42:20,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:20,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482451916] [2020-09-25 14:42:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:20,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:20,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:20,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:20,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:20,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:20,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:21,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:25,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:25,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 14:42:25,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:42:25,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:42:25,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:25,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:42:25,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:42:25,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 14:42:25,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:25,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:25,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:25,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:25,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:25,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:25,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:42:25,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:25,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:25,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:25,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:25,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:42:25,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:25,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:25,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:25,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:25,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:25,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:25,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:25,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 14:42:25,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:25,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:25,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:42:25,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:42:25,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482451916] [2020-09-25 14:42:25,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:25,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:42:25,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455391507] [2020-09-25 14:42:25,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:42:25,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:25,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:42:25,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:42:25,655 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 14:42:27,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:27,409 INFO L93 Difference]: Finished difference Result 861 states and 1069 transitions. [2020-09-25 14:42:27,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:42:27,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 14:42:27,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:27,423 INFO L225 Difference]: With dead ends: 861 [2020-09-25 14:42:27,423 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 14:42:27,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:42:27,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 14:42:27,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 697. [2020-09-25 14:42:27,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-25 14:42:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 874 transitions. [2020-09-25 14:42:27,488 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 874 transitions. Word has length 142 [2020-09-25 14:42:27,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:27,490 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 874 transitions. [2020-09-25 14:42:27,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:42:27,490 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 874 transitions. [2020-09-25 14:42:27,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 14:42:27,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:27,494 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:27,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:42:27,497 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:27,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:27,498 INFO L82 PathProgramCache]: Analyzing trace with hash 821407407, now seen corresponding path program 1 times [2020-09-25 14:42:27,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:27,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271743673] [2020-09-25 14:42:27,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:27,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:27,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:27,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:28,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:28,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:29,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:29,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:29,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:29,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:32,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:32,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 14:42:32,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:42:32,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:42:32,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:32,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:32,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:32,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:42:32,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:42:32,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:42:32,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:32,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:32,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:32,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:32,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:32,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:42:32,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:32,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:32,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:32,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:32,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:42:32,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:32,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:32,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:32,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:32,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:42:32,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:32,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 14:42:32,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:32,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:32,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:32,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:32,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:42:32,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:32,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271743673] [2020-09-25 14:42:32,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:32,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:42:32,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642976251] [2020-09-25 14:42:32,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:32,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:32,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:32,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:32,970 INFO L87 Difference]: Start difference. First operand 697 states and 874 transitions. Second operand 7 states. [2020-09-25 14:42:35,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:35,041 INFO L93 Difference]: Finished difference Result 1705 states and 2191 transitions. [2020-09-25 14:42:35,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:42:35,042 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-09-25 14:42:35,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:35,051 INFO L225 Difference]: With dead ends: 1705 [2020-09-25 14:42:35,051 INFO L226 Difference]: Without dead ends: 1023 [2020-09-25 14:42:35,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:42:35,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-09-25 14:42:35,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1011. [2020-09-25 14:42:35,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-09-25 14:42:35,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1269 transitions. [2020-09-25 14:42:35,108 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1269 transitions. Word has length 146 [2020-09-25 14:42:35,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:35,110 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1269 transitions. [2020-09-25 14:42:35,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:35,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1269 transitions. [2020-09-25 14:42:35,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 14:42:35,117 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:35,118 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:35,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:42:35,118 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:35,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:35,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1962223494, now seen corresponding path program 1 times [2020-09-25 14:42:35,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:35,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205625908] [2020-09-25 14:42:35,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:35,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:35,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:35,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:35,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:37,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:37,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:37,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:37,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:40,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:40,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 14:42:40,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:42:40,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 14:42:40,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:40,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:40,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:42:40,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:42:40,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 14:42:40,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:40,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:40,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:40,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:40,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:40,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:40,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:42:40,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:40,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:42:40,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:40,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:40,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:40,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:40,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:40,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:40,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 14:42:40,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:40,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:40,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:40,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:40,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:42:40,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:40,540 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:40,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205625908] [2020-09-25 14:42:40,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:40,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:42:40,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763495367] [2020-09-25 14:42:40,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:42:40,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:40,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:42:40,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:42:40,545 INFO L87 Difference]: Start difference. First operand 1011 states and 1269 transitions. Second operand 8 states. [2020-09-25 14:42:44,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:44,241 INFO L93 Difference]: Finished difference Result 3582 states and 4814 transitions. [2020-09-25 14:42:44,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:42:44,243 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 152 [2020-09-25 14:42:44,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:44,264 INFO L225 Difference]: With dead ends: 3582 [2020-09-25 14:42:44,264 INFO L226 Difference]: Without dead ends: 2586 [2020-09-25 14:42:44,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:42:44,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2020-09-25 14:42:44,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 2309. [2020-09-25 14:42:44,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2020-09-25 14:42:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 2995 transitions. [2020-09-25 14:42:44,390 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 2995 transitions. Word has length 152 [2020-09-25 14:42:44,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:44,391 INFO L479 AbstractCegarLoop]: Abstraction has 2309 states and 2995 transitions. [2020-09-25 14:42:44,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:42:44,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 2995 transitions. [2020-09-25 14:42:44,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 14:42:44,399 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:44,399 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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 14:42:44,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:42:44,400 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:44,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:44,400 INFO L82 PathProgramCache]: Analyzing trace with hash -249277015, now seen corresponding path program 1 times [2020-09-25 14:42:44,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:44,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45334773] [2020-09-25 14:42:44,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:44,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:44,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:44,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:45,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:45,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:49,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:49,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 14:42:49,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:42:49,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 14:42:49,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:49,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:42:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:42:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 14:42:49,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:42:49,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:49,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:49,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:49,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:49,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:42:49,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:49,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:49,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:42:49,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 14:42:49,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:49,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:49,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:49,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:49,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:49,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 14:42:49,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:49,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:49,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:42:49,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:49,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:42:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:49,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:49,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:49,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:50,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:50,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 14:42:50,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:50,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:42:50,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:42:50,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45334773] [2020-09-25 14:42:50,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:50,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:42:50,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317022813] [2020-09-25 14:42:50,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:42:50,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:50,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:42:50,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:42:50,292 INFO L87 Difference]: Start difference. First operand 2309 states and 2995 transitions. Second operand 10 states. [2020-09-25 14:42:54,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:54,084 INFO L93 Difference]: Finished difference Result 6381 states and 9238 transitions. [2020-09-25 14:42:54,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 14:42:54,085 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 231 [2020-09-25 14:42:54,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:54,113 INFO L225 Difference]: With dead ends: 6381 [2020-09-25 14:42:54,114 INFO L226 Difference]: Without dead ends: 4087 [2020-09-25 14:42:54,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-25 14:42:54,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4087 states. [2020-09-25 14:42:54,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4087 to 3484. [2020-09-25 14:42:54,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3484 states. [2020-09-25 14:42:54,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 4577 transitions. [2020-09-25 14:42:54,285 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 4577 transitions. Word has length 231 [2020-09-25 14:42:54,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:54,285 INFO L479 AbstractCegarLoop]: Abstraction has 3484 states and 4577 transitions. [2020-09-25 14:42:54,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:42:54,286 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 4577 transitions. [2020-09-25 14:42:54,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 14:42:54,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:54,294 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:42:54,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:42:54,294 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:54,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:54,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1994523964, now seen corresponding path program 1 times [2020-09-25 14:42:54,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:54,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416274960] [2020-09-25 14:42:54,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:54,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:54,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:54,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:54,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:56,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:56,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:56,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:56,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:59,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:59,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 14:42:59,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:42:59,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 14:42:59,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:59,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:59,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:42:59,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 14:42:59,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 14:42:59,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:42:59,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:59,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:59,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:59,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:59,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:59,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:42:59,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:59,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:59,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:59,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:59,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:59,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:42:59,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:59,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:59,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:59,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:59,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:59,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 14:42:59,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:59,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:59,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:59,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:59,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:42:59,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:42:59,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 14:42:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:59,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:59,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:59,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:59,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:42:59,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:59,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-25 14:42:59,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:59,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:59,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:42:59,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:00,037 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 102 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 14:43:00,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416274960] [2020-09-25 14:43:00,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:00,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:43:00,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298163627] [2020-09-25 14:43:00,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:43:00,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:00,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:43:00,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:43:00,040 INFO L87 Difference]: Start difference. First operand 3484 states and 4577 transitions. Second operand 9 states.