/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:27:38,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:27:38,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:27:38,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:27:38,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:27:38,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:27:38,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:27:38,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:27:38,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:27:38,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:27:38,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:27:38,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:27:38,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:27:38,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:27:38,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:27:38,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:27:38,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:27:38,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:27:38,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:27:38,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:27:38,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:27:38,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:27:38,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:27:38,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:27:38,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:27:38,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:27:38,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:27:38,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:27:38,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:27:38,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:27:38,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:27:38,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:27:38,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:27:38,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:27:38,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:27:38,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:27:38,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:27:38,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:27:38,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:27:38,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:27:38,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:27:38,778 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:27:38,825 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:27:38,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:27:38,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:27:38,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:27:38,829 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:27:38,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:27:38,829 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:27:38,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:27:38,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:27:38,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:27:38,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:27:38,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:27:38,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:27:38,832 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:27:38,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:27:38,833 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:27:38,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:27:38,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:27:38,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:27:38,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:27:38,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:27:38,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:27:38,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:27:38,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:27:38,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:27:38,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:27:38,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:27:38,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:27:38,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:27:38,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:27:39,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:27:39,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:27:39,321 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:27:39,323 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:27:39,324 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:27:39,325 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-25 12:27:39,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c557b18ea/5c85fcd9651a4b689f8fe56a7ee164dd/FLAGcb4945c5d [2020-09-25 12:27:40,071 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:27:40,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-25 12:27:40,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c557b18ea/5c85fcd9651a4b689f8fe56a7ee164dd/FLAGcb4945c5d [2020-09-25 12:27:40,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c557b18ea/5c85fcd9651a4b689f8fe56a7ee164dd [2020-09-25 12:27:40,383 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:27:40,390 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:27:40,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:40,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:27:40,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:27:40,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:40" (1/1) ... [2020-09-25 12:27:40,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570ad94a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:40, skipping insertion in model container [2020-09-25 12:27:40,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:40" (1/1) ... [2020-09-25 12:27:40,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:27:40,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:27:41,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:41,008 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:27:41,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:41,175 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:27:41,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41 WrapperNode [2020-09-25 12:27:41,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:41,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:27:41,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:27:41,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:27:41,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41" (1/1) ... [2020-09-25 12:27:41,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41" (1/1) ... [2020-09-25 12:27:41,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41" (1/1) ... [2020-09-25 12:27:41,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41" (1/1) ... [2020-09-25 12:27:41,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41" (1/1) ... [2020-09-25 12:27:41,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41" (1/1) ... [2020-09-25 12:27:41,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41" (1/1) ... [2020-09-25 12:27:41,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:27:41,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:27:41,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:27:41,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:27:41,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:27:41,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:27:41,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:27:41,423 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:27:41,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:27:41,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:27:41,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:27:41,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:27:41,425 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:27:41,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:27:41,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:27:41,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:27:42,810 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:27:42,810 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:27:42,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:42 BoogieIcfgContainer [2020-09-25 12:27:42,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:27:42,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:27:42,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:27:42,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:27:42,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:27:40" (1/3) ... [2020-09-25 12:27:42,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4968153e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:42, skipping insertion in model container [2020-09-25 12:27:42,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:41" (2/3) ... [2020-09-25 12:27:42,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4968153e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:42, skipping insertion in model container [2020-09-25 12:27:42,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:42" (3/3) ... [2020-09-25 12:27:42,829 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label52.c [2020-09-25 12:27:42,840 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:27:42,855 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:27:42,873 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:27:42,910 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:27:42,910 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:27:42,911 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:27:42,911 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:27:42,911 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:27:42,911 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:27:42,911 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:27:42,911 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:27:42,940 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:27:42,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 12:27:42,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:42,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:27:42,953 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:42,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:42,961 INFO L82 PathProgramCache]: Analyzing trace with hash 963589103, now seen corresponding path program 1 times [2020-09-25 12:27:42,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:42,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171370485] [2020-09-25 12:27:42,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:43,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:43,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:43,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:43,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 12:27:43,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:43,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 734 [2020-09-25 12:27:43,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:43,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:43,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:43,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:27:43,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 12:27:43,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:27:44,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:44,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:44,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:44,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:44,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:44,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:27:44,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:44,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:44,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:44,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:44,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:27:44,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:44,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:44,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171370485] [2020-09-25 12:27:44,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:44,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:27:44,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695000553] [2020-09-25 12:27:44,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:27:44,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:44,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:27:44,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:27:44,095 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:27:46,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:46,119 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 12:27:46,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:27:46,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 12:27:46,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:46,145 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 12:27:46,145 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 12:27:46,156 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 12:27:46,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 12:27:46,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 12:27:46,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 12:27:46,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 12:27:46,251 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 60 [2020-09-25 12:27:46,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:46,252 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 12:27:46,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:27:46,252 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 12:27:46,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 12:27:46,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:46,267 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:27:46,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:27:46,268 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:46,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:46,268 INFO L82 PathProgramCache]: Analyzing trace with hash 2017301439, now seen corresponding path program 1 times [2020-09-25 12:27:46,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:46,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884476532] [2020-09-25 12:27:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:46,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:46,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:46,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:47,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:47,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:47,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:48,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:51,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:51,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 12:27:51,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:27:51,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4744 [2020-09-25 12:27:51,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:51,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:51,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:27:51,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:27:51,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 12:27:51,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:51,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:51,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:51,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:51,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:51,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:51,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:27:51,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:51,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:51,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:51,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:51,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:27:51,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:51,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:51,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:51,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:51,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:51,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:27:51,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:51,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 12:27:51,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:51,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:51,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:51,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:51,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:27:51,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:27:51,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884476532] [2020-09-25 12:27:51,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:51,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:27:51,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764235427] [2020-09-25 12:27:51,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:27:51,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:51,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:27:51,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:27:51,493 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 12:27:53,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:53,190 INFO L93 Difference]: Finished difference Result 1389 states and 1702 transitions. [2020-09-25 12:27:53,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:27:53,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 12:27:53,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:53,201 INFO L225 Difference]: With dead ends: 1389 [2020-09-25 12:27:53,201 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 12:27:53,204 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 12:27:53,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 12:27:53,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 849. [2020-09-25 12:27:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-25 12:27:53,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1017 transitions. [2020-09-25 12:27:53,267 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1017 transitions. Word has length 139 [2020-09-25 12:27:53,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:53,268 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1017 transitions. [2020-09-25 12:27:53,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:27:53,268 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1017 transitions. [2020-09-25 12:27:53,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 12:27:53,276 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:53,276 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:27:53,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:27:53,277 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:53,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:53,277 INFO L82 PathProgramCache]: Analyzing trace with hash -273743075, now seen corresponding path program 1 times [2020-09-25 12:27:53,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:53,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480472933] [2020-09-25 12:27:53,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:53,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:53,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:53,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:53,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:55,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:55,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:55,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:57,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:57,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 12:27:57,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:27:57,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3731 [2020-09-25 12:27:57,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:57,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:57,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:57,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 12:27:57,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:57,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:57,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:57,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:57,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:57,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:57,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:27:57,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:57,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:57,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:57,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:57,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:57,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:57,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:57,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:57,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:57,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:57,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:57,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 12:27:57,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:57,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:57,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:57,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:57,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:57,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:57,481 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:57,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480472933] [2020-09-25 12:27:57,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:57,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:27:57,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883455754] [2020-09-25 12:27:57,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:27:57,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:57,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:27:57,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:27:57,484 INFO L87 Difference]: Start difference. First operand 849 states and 1017 transitions. Second operand 8 states. [2020-09-25 12:28:00,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:00,881 INFO L93 Difference]: Finished difference Result 2932 states and 3692 transitions. [2020-09-25 12:28:00,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:28:00,883 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-09-25 12:28:00,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:00,907 INFO L225 Difference]: With dead ends: 2932 [2020-09-25 12:28:00,907 INFO L226 Difference]: Without dead ends: 2098 [2020-09-25 12:28:00,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:28:00,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2020-09-25 12:28:00,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1983. [2020-09-25 12:28:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1983 states. [2020-09-25 12:28:01,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 2445 transitions. [2020-09-25 12:28:01,015 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 2445 transitions. Word has length 149 [2020-09-25 12:28:01,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:01,017 INFO L479 AbstractCegarLoop]: Abstraction has 1983 states and 2445 transitions. [2020-09-25 12:28:01,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:28:01,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 2445 transitions. [2020-09-25 12:28:01,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 12:28:01,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:01,034 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:28:01,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:28:01,035 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:01,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:01,035 INFO L82 PathProgramCache]: Analyzing trace with hash -103369624, now seen corresponding path program 1 times [2020-09-25 12:28:01,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:01,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775963030] [2020-09-25 12:28:01,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:01,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:01,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:01,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:02,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:02,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:05,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:05,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:05,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 12:28:05,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:28:05,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4586 [2020-09-25 12:28:05,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:05,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:05,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:28:05,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:28:05,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 12:28:05,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:05,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:05,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:05,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:05,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:05,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:05,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:28:05,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:05,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:28:05,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:05,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:05,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:05,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:05,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:28:05,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:05,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 12:28:05,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:05,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:28:05,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:05,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:28:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:05,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:06,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:06,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:28:06,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:06,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 12:28:06,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:06,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:06,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:06,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:06,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 12:28:06,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 91 proven. 9 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 12:28:06,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775963030] [2020-09-25 12:28:06,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:06,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:28:06,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709406579] [2020-09-25 12:28:06,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:28:06,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:06,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:28:06,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:28:06,187 INFO L87 Difference]: Start difference. First operand 1983 states and 2445 transitions. Second operand 9 states. [2020-09-25 12:28:09,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:09,474 INFO L93 Difference]: Finished difference Result 4510 states and 5638 transitions. [2020-09-25 12:28:09,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:28:09,475 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2020-09-25 12:28:09,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:09,492 INFO L225 Difference]: With dead ends: 4510 [2020-09-25 12:28:09,493 INFO L226 Difference]: Without dead ends: 2542 [2020-09-25 12:28:09,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:28:09,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2020-09-25 12:28:09,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2491. [2020-09-25 12:28:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2491 states. [2020-09-25 12:28:09,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2491 states to 2491 states and 3053 transitions. [2020-09-25 12:28:09,585 INFO L78 Accepts]: Start accepts. Automaton has 2491 states and 3053 transitions. Word has length 219 [2020-09-25 12:28:09,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:09,585 INFO L479 AbstractCegarLoop]: Abstraction has 2491 states and 3053 transitions. [2020-09-25 12:28:09,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:28:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2491 states and 3053 transitions. [2020-09-25 12:28:09,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 12:28:09,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:09,591 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:28:09,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:28:09,591 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:09,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:09,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1270686682, now seen corresponding path program 1 times [2020-09-25 12:28:09,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:09,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215630080] [2020-09-25 12:28:09,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:09,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:09,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:09,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:10,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:11,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:11,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:12,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:14,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:14,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-25 12:28:14,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:28:14,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 12:28:14,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:14,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:28:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 12:28:14,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:14,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:14,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:14,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:14,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:14,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:14,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:28:14,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:14,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:28:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:14,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:28:14,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:14,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:14,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:14,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:15,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:15,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:28:15,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:15,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 12:28:15,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:15,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:28:15,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:15,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 12:28:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:15,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:15,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:15,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:15,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:28:15,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:15,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-09-25 12:28:15,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:15,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:15,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:15,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 12:28:15,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 12:28:15,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215630080] [2020-09-25 12:28:15,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:15,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:28:15,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956835154] [2020-09-25 12:28:15,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:28:15,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:15,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:28:15,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:28:15,802 INFO L87 Difference]: Start difference. First operand 2491 states and 3053 transitions. Second operand 9 states. [2020-09-25 12:28:19,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:19,728 INFO L93 Difference]: Finished difference Result 5631 states and 7205 transitions. [2020-09-25 12:28:19,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:28:19,733 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 232 [2020-09-25 12:28:19,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:19,753 INFO L225 Difference]: With dead ends: 5631 [2020-09-25 12:28:19,753 INFO L226 Difference]: Without dead ends: 3291 [2020-09-25 12:28:19,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:28:19,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2020-09-25 12:28:19,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 3098. [2020-09-25 12:28:19,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3098 states. [2020-09-25 12:28:19,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 3793 transitions. [2020-09-25 12:28:19,853 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 3793 transitions. Word has length 232 [2020-09-25 12:28:19,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:19,853 INFO L479 AbstractCegarLoop]: Abstraction has 3098 states and 3793 transitions. [2020-09-25 12:28:19,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:28:19,854 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 3793 transitions. [2020-09-25 12:28:19,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 12:28:19,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:19,861 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:28:19,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:28:19,861 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:19,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:19,862 INFO L82 PathProgramCache]: Analyzing trace with hash -396992247, now seen corresponding path program 1 times [2020-09-25 12:28:19,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:19,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614805108] [2020-09-25 12:28:19,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:19,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:20,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:20,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:20,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:20,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:20,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:21,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:23,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:23,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:23,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:24,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:24,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 12:28:24,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:28:24,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 12:28:24,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:24,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:24,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:28:24,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:24,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-09-25 12:28:24,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:25,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:25,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:25,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:25,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:25,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:28:25,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:25,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:25,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:28:25,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:25,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:28:25,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:25,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:25,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:25,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:28:25,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:25,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 12:28:25,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:25,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:25,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:25,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:25,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 12:28:25,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:25,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 12:28:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:25,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:25,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 12:28:25,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:25,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-09-25 12:28:25,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:25,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:25,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:25,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:25,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:28:25,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-25 12:28:25,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614805108] [2020-09-25 12:28:25,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:25,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:28:25,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571510659] [2020-09-25 12:28:25,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:28:25,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:25,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:28:25,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:28:25,803 INFO L87 Difference]: Start difference. First operand 3098 states and 3793 transitions. Second operand 10 states.