/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem02_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:28:13,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:28:13,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:28:13,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:28:13,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:28:13,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:28:13,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:28:13,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:28:13,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:28:13,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:28:13,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:28:13,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:28:13,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:28:13,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:28:13,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:28:13,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:28:13,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:28:13,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:28:13,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:28:13,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:28:13,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:28:13,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:28:13,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:28:13,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:28:13,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:28:13,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:28:13,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:28:13,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:28:13,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:28:13,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:28:13,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:28:13,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:28:13,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:28:13,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:28:13,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:28:13,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:28:13,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:28:13,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:28:13,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:28:13,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:28:13,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:28:13,747 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 04:28:13,794 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:28:13,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:28:13,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:28:13,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:28:13,797 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:28:13,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:28:13,798 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:28:13,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:28:13,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:28:13,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:28:13,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:28:13,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:28:13,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:28:13,800 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:28:13,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:28:13,801 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:28:13,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:28:13,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:28:13,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:28:13,802 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:28:13,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:28:13,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:28:13,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:28:13,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:28:13,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:28:13,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:28:13,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:28:13,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:28:13,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:28:13,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:28:14,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:28:14,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:28:14,348 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:28:14,352 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:28:14,353 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:28:14,354 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2020-09-25 04:28:14,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/430e575ea/330d6b206faf498eaa3af2c1bf5aa7b3/FLAG262af275f [2020-09-25 04:28:15,138 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:28:15,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2020-09-25 04:28:15,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/430e575ea/330d6b206faf498eaa3af2c1bf5aa7b3/FLAG262af275f [2020-09-25 04:28:15,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/430e575ea/330d6b206faf498eaa3af2c1bf5aa7b3 [2020-09-25 04:28:15,351 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:28:15,362 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:28:15,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:15,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:28:15,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:28:15,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:15" (1/1) ... [2020-09-25 04:28:15,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:15, skipping insertion in model container [2020-09-25 04:28:15,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:15" (1/1) ... [2020-09-25 04:28:15,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:28:15,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:28:15,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:15,934 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:28:16,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:16,213 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:28:16,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:16 WrapperNode [2020-09-25 04:28:16,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:16,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:28:16,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:28:16,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:28:16,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:16" (1/1) ... [2020-09-25 04:28:16,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:16" (1/1) ... [2020-09-25 04:28:16,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:16" (1/1) ... [2020-09-25 04:28:16,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:16" (1/1) ... [2020-09-25 04:28:16,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:16" (1/1) ... [2020-09-25 04:28:16,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:16" (1/1) ... [2020-09-25 04:28:16,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:16" (1/1) ... [2020-09-25 04:28:16,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:28:16,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:28:16,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:28:16,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:28:16,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:16" (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 04:28:16,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:28:16,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:28:16,429 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:28:16,429 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:28:16,430 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:28:16,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:28:16,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:28:16,430 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:28:16,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:28:16,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:28:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:28:17,864 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:28:17,865 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:28:17,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:17 BoogieIcfgContainer [2020-09-25 04:28:17,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:28:17,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:28:17,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:28:17,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:28:17,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:28:15" (1/3) ... [2020-09-25 04:28:17,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:17, skipping insertion in model container [2020-09-25 04:28:17,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:16" (2/3) ... [2020-09-25 04:28:17,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:17, skipping insertion in model container [2020-09-25 04:28:17,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:17" (3/3) ... [2020-09-25 04:28:17,896 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label44.c [2020-09-25 04:28:17,908 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:28:17,926 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:28:17,949 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:28:18,003 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:28:18,004 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:28:18,005 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:28:18,005 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:28:18,005 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:28:18,005 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:28:18,006 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:28:18,006 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:28:18,058 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:28:18,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 04:28:18,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:18,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:18,101 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:18,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:18,111 INFO L82 PathProgramCache]: Analyzing trace with hash -118135375, now seen corresponding path program 1 times [2020-09-25 04:28:18,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:18,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-25 04:28:18,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:18,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:18,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:19,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:21,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:21,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:22,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:23,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:23,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 04:28:23,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:28:23,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 04:28:23,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:23,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:28:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:28:23,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 04:28:23,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:28:23,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:23,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:23,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:23,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:23,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:23,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 04:28:23,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:23,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:23,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:23,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:23,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:28:23,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:23,706 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 04:28:23,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-25 04:28:23,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:28:23,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:28:23,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441832448] [2020-09-25 04:28:23,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:28:23,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:23,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:28:23,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:28:23,762 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:28:26,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:26,083 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 04:28:26,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:28:26,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-09-25 04:28:26,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:26,116 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 04:28:26,117 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 04:28:26,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:26,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 04:28:26,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 04:28:26,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 04:28:26,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 04:28:26,255 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 114 [2020-09-25 04:28:26,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:26,258 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 04:28:26,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:28:26,258 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 04:28:26,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 04:28:26,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:26,264 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:26,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:28:26,265 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:26,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:26,266 INFO L82 PathProgramCache]: Analyzing trace with hash 644121349, now seen corresponding path program 1 times [2020-09-25 04:28:26,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:26,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432733956] [2020-09-25 04:28:26,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:26,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:26,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:27,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:27,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:28,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:30,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:31,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:31,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 04:28:31,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:28:31,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:28:31,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:31,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:31,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:31,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 04:28:31,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 04:28:31,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:31,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:31,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:31,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:31,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:31,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:31,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:28:31,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:31,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:31,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:31,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:31,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:31,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:31,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:31,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:31,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:31,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:28:31,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:31,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:28:31,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:31,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:31,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:31,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:31,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:28:31,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:31,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432733956] [2020-09-25 04:28:31,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:31,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:28:31,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752017370] [2020-09-25 04:28:31,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:31,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:31,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:31,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:31,609 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 04:28:34,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:34,047 INFO L93 Difference]: Finished difference Result 1900 states and 2381 transitions. [2020-09-25 04:28:34,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:34,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 04:28:34,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:34,058 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 04:28:34,058 INFO L226 Difference]: Without dead ends: 1189 [2020-09-25 04:28:34,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:34,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-25 04:28:34,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1055. [2020-09-25 04:28:34,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-09-25 04:28:34,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1308 transitions. [2020-09-25 04:28:34,106 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1308 transitions. Word has length 132 [2020-09-25 04:28:34,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:34,107 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1308 transitions. [2020-09-25 04:28:34,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:34,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1308 transitions. [2020-09-25 04:28:34,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 04:28:34,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:34,112 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:34,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:28:34,113 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:34,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:34,113 INFO L82 PathProgramCache]: Analyzing trace with hash -897472656, now seen corresponding path program 1 times [2020-09-25 04:28:34,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:34,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285314782] [2020-09-25 04:28:34,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:34,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:34,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:34,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:35,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:35,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:38,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:38,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 04:28:38,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:28:38,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4679 [2020-09-25 04:28:38,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:38,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:38,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 04:28:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 04:28:38,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:38,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:38,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:38,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:38,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:38,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:38,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:28:38,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:38,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:38,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:38,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:38,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:39,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:39,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:39,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:39,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:28:39,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:39,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 04:28:39,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:39,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:39,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:39,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:39,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:28:39,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:28:39,156 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:39,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285314782] [2020-09-25 04:28:39,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:39,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:28:39,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339432173] [2020-09-25 04:28:39,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:39,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:39,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:39,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:39,163 INFO L87 Difference]: Start difference. First operand 1055 states and 1308 transitions. Second operand 5 states. [2020-09-25 04:28:41,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:41,246 INFO L93 Difference]: Finished difference Result 2737 states and 3595 transitions. [2020-09-25 04:28:41,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:41,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-09-25 04:28:41,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:41,264 INFO L225 Difference]: With dead ends: 2737 [2020-09-25 04:28:41,264 INFO L226 Difference]: Without dead ends: 1704 [2020-09-25 04:28:41,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:41,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2020-09-25 04:28:41,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1664. [2020-09-25 04:28:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1664 states. [2020-09-25 04:28:41,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2048 transitions. [2020-09-25 04:28:41,355 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2048 transitions. Word has length 138 [2020-09-25 04:28:41,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:41,358 INFO L479 AbstractCegarLoop]: Abstraction has 1664 states and 2048 transitions. [2020-09-25 04:28:41,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:41,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2048 transitions. [2020-09-25 04:28:41,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 04:28:41,369 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:41,369 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:41,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:28:41,370 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:41,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:41,371 INFO L82 PathProgramCache]: Analyzing trace with hash -967266101, now seen corresponding path program 1 times [2020-09-25 04:28:41,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:41,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420091520] [2020-09-25 04:28:41,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:41,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:41,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:41,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:42,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:46,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:46,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 04:28:46,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:28:46,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 04:28:46,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:46,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:46,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:28:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:28:46,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:46,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:46,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:46,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:46,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:46,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:46,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 04:28:46,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:46,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:46,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:46,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:46,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:46,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:46,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:46,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:46,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:46,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:28:46,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:46,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:28:46,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:46,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:28:46,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:46,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:28:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:46,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:46,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:46,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 04:28:46,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:46,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 04:28:46,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:46,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:46,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:46,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:28:46,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:28:46,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:28:46,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420091520] [2020-09-25 04:28:46,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:46,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:28:46,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741912715] [2020-09-25 04:28:46,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:28:46,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:46,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:28:46,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:28:46,649 INFO L87 Difference]: Start difference. First operand 1664 states and 2048 transitions. Second operand 7 states. [2020-09-25 04:28:50,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:50,223 INFO L93 Difference]: Finished difference Result 5652 states and 7657 transitions. [2020-09-25 04:28:50,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:28:50,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-09-25 04:28:50,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:50,253 INFO L225 Difference]: With dead ends: 5652 [2020-09-25 04:28:50,254 INFO L226 Difference]: Without dead ends: 4010 [2020-09-25 04:28:50,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:28:50,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2020-09-25 04:28:50,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 3908. [2020-09-25 04:28:50,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3908 states. [2020-09-25 04:28:50,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3908 states to 3908 states and 4848 transitions. [2020-09-25 04:28:50,414 INFO L78 Accepts]: Start accepts. Automaton has 3908 states and 4848 transitions. Word has length 152 [2020-09-25 04:28:50,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:50,415 INFO L479 AbstractCegarLoop]: Abstraction has 3908 states and 4848 transitions. [2020-09-25 04:28:50,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:28:50,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3908 states and 4848 transitions. [2020-09-25 04:28:50,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 04:28:50,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:50,436 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:50,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:28:50,437 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:50,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:50,437 INFO L82 PathProgramCache]: Analyzing trace with hash 130781434, now seen corresponding path program 1 times [2020-09-25 04:28:50,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:50,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787837536] [2020-09-25 04:28:50,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:50,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:50,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:50,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:55,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:55,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 04:28:55,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:28:55,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 04:28:55,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:55,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:55,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 04:28:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:28:55,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:55,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:55,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:55,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:55,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:55,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:55,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:28:55,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:55,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:55,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:55,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:55,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:28:55,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:55,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:55,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:55,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:28:55,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:55,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:28:55,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:55,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:55,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:55,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:55,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:28:55,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:28:55,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:28:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:55,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:55,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:55,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 04:28:55,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:55,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 04:28:55,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:55,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:55,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:55,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:28:55,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:28:55,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:28:55,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787837536] [2020-09-25 04:28:55,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:55,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:28:55,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017944312] [2020-09-25 04:28:55,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:28:55,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:55,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:28:55,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:28:55,866 INFO L87 Difference]: Start difference. First operand 3908 states and 4848 transitions. Second operand 7 states. [2020-09-25 04:28:59,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:59,244 INFO L93 Difference]: Finished difference Result 7912 states and 10096 transitions. [2020-09-25 04:28:59,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:28:59,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-09-25 04:28:59,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:59,263 INFO L225 Difference]: With dead ends: 7912 [2020-09-25 04:28:59,263 INFO L226 Difference]: Without dead ends: 3521 [2020-09-25 04:28:59,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:28:59,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2020-09-25 04:28:59,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 3197. [2020-09-25 04:28:59,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2020-09-25 04:28:59,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 3775 transitions. [2020-09-25 04:28:59,388 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 3775 transitions. Word has length 157 [2020-09-25 04:28:59,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:59,389 INFO L479 AbstractCegarLoop]: Abstraction has 3197 states and 3775 transitions. [2020-09-25 04:28:59,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:28:59,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 3775 transitions. [2020-09-25 04:28:59,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 04:28:59,408 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:59,408 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:59,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:28:59,409 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:59,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:59,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1456643231, now seen corresponding path program 1 times [2020-09-25 04:28:59,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:59,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973687331] [2020-09-25 04:28:59,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:59,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:59,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:59,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking...