/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=0.4 --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/Problem14_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:40:12,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:40:12,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:40:12,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:40:12,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:40:12,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:40:12,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:40:12,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:40:12,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:40:12,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:40:12,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:40:12,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:40:12,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:40:12,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:40:12,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:40:12,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:40:12,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:40:12,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:40:12,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:40:12,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:40:12,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:40:12,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:40:12,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:40:12,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:40:12,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:40:12,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:40:12,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:40:12,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:40:12,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:40:12,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:40:12,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:40:12,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:40:12,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:40:12,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:40:12,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:40:12,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:40:12,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:40:12,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:40:12,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:40:12,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:40:12,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:40:12,919 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 05:40:12,953 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:40:12,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:40:12,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:40:12,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:40:12,956 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:40:12,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:40:12,957 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:40:12,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:40:12,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:40:12,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:40:12,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:40:12,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:40:12,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:40:12,959 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:40:12,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:40:12,959 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:40:12,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:40:12,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:40:12,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:40:12,961 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:40:12,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:40:12,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:40:12,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:40:12,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:40:12,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:40:12,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:40:12,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:40:12,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:40:12,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:40:12,964 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:40:13,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:40:13,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:40:13,473 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:40:13,475 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:40:13,476 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:40:13,477 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 05:40:13,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5265fc205/b8610b737fce4cec86e034136e83521d/FLAG22d3ad9a4 [2020-09-25 05:40:14,285 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:40:14,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 05:40:14,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5265fc205/b8610b737fce4cec86e034136e83521d/FLAG22d3ad9a4 [2020-09-25 05:40:14,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5265fc205/b8610b737fce4cec86e034136e83521d [2020-09-25 05:40:14,494 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:40:14,501 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:40:14,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:40:14,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:40:14,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:40:14,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:40:14" (1/1) ... [2020-09-25 05:40:14,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a5c20e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:14, skipping insertion in model container [2020-09-25 05:40:14,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:40:14" (1/1) ... [2020-09-25 05:40:14,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:40:14,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:40:15,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:40:15,274 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:40:15,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:40:15,487 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:40:15,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15 WrapperNode [2020-09-25 05:40:15,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:40:15,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:40:15,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:40:15,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:40:15,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15" (1/1) ... [2020-09-25 05:40:15,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15" (1/1) ... [2020-09-25 05:40:15,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15" (1/1) ... [2020-09-25 05:40:15,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15" (1/1) ... [2020-09-25 05:40:15,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15" (1/1) ... [2020-09-25 05:40:15,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15" (1/1) ... [2020-09-25 05:40:15,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15" (1/1) ... [2020-09-25 05:40:15,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:40:15,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:40:15,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:40:15,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:40:15,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15" (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 05:40:15,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:40:15,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:40:15,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:40:15,777 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:40:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:40:15,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:40:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:40:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:40:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:40:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:40:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:40:17,574 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:40:17,574 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:40:17,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:40:17 BoogieIcfgContainer [2020-09-25 05:40:17,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:40:17,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:40:17,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:40:17,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:40:17,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:40:14" (1/3) ... [2020-09-25 05:40:17,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27814fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:40:17, skipping insertion in model container [2020-09-25 05:40:17,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:15" (2/3) ... [2020-09-25 05:40:17,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27814fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:40:17, skipping insertion in model container [2020-09-25 05:40:17,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:40:17" (3/3) ... [2020-09-25 05:40:17,610 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label36.c [2020-09-25 05:40:17,622 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:40:17,638 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:40:17,662 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:40:17,708 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:40:17,709 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:40:17,710 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:40:17,710 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:40:17,710 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:40:17,710 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:40:17,710 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:40:17,711 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:40:17,753 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 05:40:17,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 05:40:17,769 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:17,771 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] [2020-09-25 05:40:17,771 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:17,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:17,781 INFO L82 PathProgramCache]: Analyzing trace with hash -4985686, now seen corresponding path program 1 times [2020-09-25 05:40:17,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:17,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353720905] [2020-09-25 05:40:17,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:18,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:18,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 05:40:18,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:40:18,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-09-25 05:40:18,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:18,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:18,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:40:18,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:40:18,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 05:40:18,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:40:18,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:18,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:18,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:18,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:18,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 05:40:18,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:18,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:18,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:18,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:18,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:40:18,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:18,995 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 05:40:18,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353720905] [2020-09-25 05:40:18,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:40:18,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:40:18,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212339111] [2020-09-25 05:40:19,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:40:19,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:19,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:40:19,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:40:19,030 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 05:40:22,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:22,166 INFO L93 Difference]: Finished difference Result 1656 states and 2196 transitions. [2020-09-25 05:40:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:40:22,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-25 05:40:22,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:22,197 INFO L225 Difference]: With dead ends: 1656 [2020-09-25 05:40:22,198 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 05:40:22,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 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 05:40:22,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 05:40:22,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 806. [2020-09-25 05:40:22,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 05:40:22,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 969 transitions. [2020-09-25 05:40:22,330 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 969 transitions. Word has length 67 [2020-09-25 05:40:22,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:22,331 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 969 transitions. [2020-09-25 05:40:22,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:40:22,331 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 969 transitions. [2020-09-25 05:40:22,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 05:40:22,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:22,341 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:40:22,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:40:22,341 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:22,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:22,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1033084141, now seen corresponding path program 1 times [2020-09-25 05:40:22,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:22,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265897655] [2020-09-25 05:40:22,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:22,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:22,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:22,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:22,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:23,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:24,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:24,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:27,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:27,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 05:40:27,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:40:27,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 05:40:27,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:27,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:27,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:27,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:40:27,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 05:40:27,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:27,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:27,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:27,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:27,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:27,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:27,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:40:27,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:27,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:27,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:27,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:27,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:27,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:27,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:27,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:27,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:27,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:40:27,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:27,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 05:40:27,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:27,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:27,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:27,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:27,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:40:27,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:27,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265897655] [2020-09-25 05:40:27,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:27,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:27,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948530472] [2020-09-25 05:40:27,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:27,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:27,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:27,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:27,724 INFO L87 Difference]: Start difference. First operand 806 states and 969 transitions. Second operand 5 states. [2020-09-25 05:40:30,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:30,449 INFO L93 Difference]: Finished difference Result 2007 states and 2506 transitions. [2020-09-25 05:40:30,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:30,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-25 05:40:30,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:30,457 INFO L225 Difference]: With dead ends: 2007 [2020-09-25 05:40:30,458 INFO L226 Difference]: Without dead ends: 1216 [2020-09-25 05:40:30,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 05:40:30,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2020-09-25 05:40:30,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1202. [2020-09-25 05:40:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1202 states. [2020-09-25 05:40:30,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1425 transitions. [2020-09-25 05:40:30,505 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1425 transitions. Word has length 146 [2020-09-25 05:40:30,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:30,506 INFO L479 AbstractCegarLoop]: Abstraction has 1202 states and 1425 transitions. [2020-09-25 05:40:30,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:30,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1425 transitions. [2020-09-25 05:40:30,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 05:40:30,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:30,518 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 05:40:30,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:40:30,518 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:30,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:30,519 INFO L82 PathProgramCache]: Analyzing trace with hash 149672492, now seen corresponding path program 1 times [2020-09-25 05:40:30,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:30,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246421728] [2020-09-25 05:40:30,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:30,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:31,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:31,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:31,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:31,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:32,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:33,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:35,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:35,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-25 05:40:35,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:40:35,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:40:35,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:35,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:35,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:35,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-09-25 05:40:35,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 05:40:35,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:40:35,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:35,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:35,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:35,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:35,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:35,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:40:35,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:35,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:35,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:35,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:35,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:35,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:35,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:35,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:35,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:35,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 05:40:35,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:35,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 05:40:35,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:35,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 05:40:35,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:36,087 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:36,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246421728] [2020-09-25 05:40:36,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:36,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:36,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487125449] [2020-09-25 05:40:36,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:36,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:36,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:36,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:36,096 INFO L87 Difference]: Start difference. First operand 1202 states and 1425 transitions. Second operand 5 states. [2020-09-25 05:40:38,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:38,840 INFO L93 Difference]: Finished difference Result 2809 states and 3463 transitions. [2020-09-25 05:40:38,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:38,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-09-25 05:40:38,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:38,853 INFO L225 Difference]: With dead ends: 2809 [2020-09-25 05:40:38,854 INFO L226 Difference]: Without dead ends: 1811 [2020-09-25 05:40:38,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 05:40:38,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2020-09-25 05:40:38,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1775. [2020-09-25 05:40:38,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1775 states. [2020-09-25 05:40:38,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2128 transitions. [2020-09-25 05:40:38,926 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 2128 transitions. Word has length 216 [2020-09-25 05:40:38,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:38,928 INFO L479 AbstractCegarLoop]: Abstraction has 1775 states and 2128 transitions. [2020-09-25 05:40:38,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:38,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 2128 transitions. [2020-09-25 05:40:38,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 05:40:38,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:38,938 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:38,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:40:38,939 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:38,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:38,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1124649340, now seen corresponding path program 1 times [2020-09-25 05:40:38,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:38,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83675279] [2020-09-25 05:40:38,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:39,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:39,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:39,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:39,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:40,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:40,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:40,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:40,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:41,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:43,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:43,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-25 05:40:43,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:40:43,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 05:40:43,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:43,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:43,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:43,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:40:43,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 05:40:43,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:44,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:44,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:44,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:44,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:44,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:44,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:40:44,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:44,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:44,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:44,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:44,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:44,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:44,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:44,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:44,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:40:44,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:44,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 05:40:44,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:44,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:40:44,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:44,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:40:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:44,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:44,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:44,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 05:40:44,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:44,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 05:40:44,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:44,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:40:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 05:40:44,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:40:44,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83675279] [2020-09-25 05:40:44,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:44,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:40:44,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735098880] [2020-09-25 05:40:44,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:40:44,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:44,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:40:44,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:40:44,756 INFO L87 Difference]: Start difference. First operand 1775 states and 2128 transitions. Second operand 7 states. [2020-09-25 05:40:48,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:48,535 INFO L93 Difference]: Finished difference Result 3699 states and 4571 transitions. [2020-09-25 05:40:48,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:40:48,536 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-09-25 05:40:48,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:48,553 INFO L225 Difference]: With dead ends: 3699 [2020-09-25 05:40:48,553 INFO L226 Difference]: Without dead ends: 2128 [2020-09-25 05:40:48,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 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 05:40:48,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2020-09-25 05:40:48,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2022. [2020-09-25 05:40:48,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2022 states. [2020-09-25 05:40:48,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2423 transitions. [2020-09-25 05:40:48,633 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2423 transitions. Word has length 240 [2020-09-25 05:40:48,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:48,634 INFO L479 AbstractCegarLoop]: Abstraction has 2022 states and 2423 transitions. [2020-09-25 05:40:48,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:40:48,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2423 transitions. [2020-09-25 05:40:48,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 05:40:48,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:48,640 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:48,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:40:48,640 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:48,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:48,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1365263247, now seen corresponding path program 1 times [2020-09-25 05:40:48,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:48,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050676643] [2020-09-25 05:40:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:48,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:48,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:48,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:48,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:49,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:50,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:51,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:52,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:53,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:53,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-25 05:40:53,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:40:53,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:40:53,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:53,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:53,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:40:53,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-25 05:40:53,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 05:40:53,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:53,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:53,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:53,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:53,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:53,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:53,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:40:53,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:53,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:53,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:53,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:53,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:53,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:53,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:53,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:53,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:53,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 05:40:53,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:53,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 05:40:53,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:53,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:53,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:40:53,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:53,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 05:40:53,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:53,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 05:40:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:53,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:54,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:54,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 05:40:54,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:54,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 05:40:54,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:54,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:40:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 05:40:54,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:54,392 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:40:54,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050676643] [2020-09-25 05:40:54,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:54,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:40:54,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757312498] [2020-09-25 05:40:54,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:40:54,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:54,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:40:54,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:40:54,396 INFO L87 Difference]: Start difference. First operand 2022 states and 2423 transitions. Second operand 8 states. [2020-09-25 05:40:59,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:59,022 INFO L93 Difference]: Finished difference Result 5038 states and 6179 transitions. [2020-09-25 05:40:59,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 05:40:59,028 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 249 [2020-09-25 05:40:59,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:59,044 INFO L225 Difference]: With dead ends: 5038 [2020-09-25 05:40:59,044 INFO L226 Difference]: Without dead ends: 3220 [2020-09-25 05:40:59,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 05:40:59,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2020-09-25 05:40:59,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 2965. [2020-09-25 05:40:59,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2965 states. [2020-09-25 05:40:59,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 3484 transitions. [2020-09-25 05:40:59,128 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 3484 transitions. Word has length 249 [2020-09-25 05:40:59,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:59,128 INFO L479 AbstractCegarLoop]: Abstraction has 2965 states and 3484 transitions. [2020-09-25 05:40:59,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:40:59,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 3484 transitions. [2020-09-25 05:40:59,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-09-25 05:40:59,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:59,137 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:59,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:40:59,137 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:59,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:59,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1040221153, now seen corresponding path program 1 times [2020-09-25 05:40:59,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:59,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903479983] [2020-09-25 05:40:59,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:59,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:59,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:59,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:41:00,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:41:00,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking...