/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/Problem10_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:30:20,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:30:20,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:30:20,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:30:20,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:30:20,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:30:20,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:30:20,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:30:20,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:30:20,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:30:20,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:30:20,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:30:20,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:30:20,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:30:20,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:30:20,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:30:20,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:30:20,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:30:20,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:30:20,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:30:20,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:30:20,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:30:20,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:30:20,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:30:20,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:30:20,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:30:20,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:30:20,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:30:20,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:30:20,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:30:20,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:30:20,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:30:20,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:30:20,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:30:20,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:30:20,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:30:20,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:30:20,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:30:20,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:30:20,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:30:20,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:30:20,314 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 04:30:20,362 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:30:20,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:30:20,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:30:20,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:30:20,366 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:30:20,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:30:20,366 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:30:20,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:30:20,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:30:20,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:30:20,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:30:20,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:30:20,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:30:20,369 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:30:20,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:30:20,369 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:30:20,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:30:20,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:30:20,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:30:20,370 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:30:20,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:30:20,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:30:20,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:30:20,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:30:20,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:30:20,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:30:20,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:30:20,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:30:20,372 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:30:20,373 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 04:30:20,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:30:20,843 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:30:20,848 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:30:20,850 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:30:20,850 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:30:20,851 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 04:30:20,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f867cb8d/572f7f4211f14692bf6f5036687b0dac/FLAG48ede3172 [2020-09-25 04:30:21,613 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:30:21,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 04:30:21,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f867cb8d/572f7f4211f14692bf6f5036687b0dac/FLAG48ede3172 [2020-09-25 04:30:21,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f867cb8d/572f7f4211f14692bf6f5036687b0dac [2020-09-25 04:30:21,879 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:30:21,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:30:21,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:30:21,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:30:21,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:30:21,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:30:21" (1/1) ... [2020-09-25 04:30:21,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88af870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:21, skipping insertion in model container [2020-09-25 04:30:21,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:30:21" (1/1) ... [2020-09-25 04:30:21,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:30:21,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:30:22,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:30:22,582 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:30:22,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:30:22,698 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:30:22,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:22 WrapperNode [2020-09-25 04:30:22,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:30:22,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:30:22,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:30:22,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:30:22,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:22" (1/1) ... [2020-09-25 04:30:22,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:22" (1/1) ... [2020-09-25 04:30:22,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:22" (1/1) ... [2020-09-25 04:30:22,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:22" (1/1) ... [2020-09-25 04:30:22,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:22" (1/1) ... [2020-09-25 04:30:22,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:22" (1/1) ... [2020-09-25 04:30:22,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:22" (1/1) ... [2020-09-25 04:30:22,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:30:22,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:30:22,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:30:22,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:30:22,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:22" (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 04:30:22,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:30:22,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:30:22,943 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:30:22,944 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:30:22,944 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:30:22,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:30:22,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:30:22,945 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:30:22,945 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:30:22,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:30:22,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:30:24,686 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:30:24,687 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:30:24,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:24 BoogieIcfgContainer [2020-09-25 04:30:24,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:30:24,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:30:24,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:30:24,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:30:24,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:30:21" (1/3) ... [2020-09-25 04:30:24,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c422064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:24, skipping insertion in model container [2020-09-25 04:30:24,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:22" (2/3) ... [2020-09-25 04:30:24,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c422064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:24, skipping insertion in model container [2020-09-25 04:30:24,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:24" (3/3) ... [2020-09-25 04:30:24,707 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label33.c [2020-09-25 04:30:24,720 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:30:24,732 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:30:24,756 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:30:24,791 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:30:24,792 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:30:24,792 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:30:24,792 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:30:24,792 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:30:24,792 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:30:24,793 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:30:24,793 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:30:24,826 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:30:24,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 04:30:24,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:24,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:24,840 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:24,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:24,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1274135065, now seen corresponding path program 1 times [2020-09-25 04:30:24,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:24,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572063278] [2020-09-25 04:30:24,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:25,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:25,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:25,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:26,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:26,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 04:30:26,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:30:26,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1457 [2020-09-25 04:30:26,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:26,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:26,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:30:26,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:30:26,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 04:30:26,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:30:26,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:26,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:26,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:26,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:26,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:26,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 04:30:26,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:26,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:26,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:30:26,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:30:26,768 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 04:30:26,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572063278] [2020-09-25 04:30:26,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:30:26,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:30:26,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944901132] [2020-09-25 04:30:26,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:30:26,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:26,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:30:26,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:30:26,813 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:30:28,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:28,980 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 04:30:28,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:30:28,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-09-25 04:30:28,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:29,012 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 04:30:29,012 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 04:30:29,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:29,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 04:30:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 04:30:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 04:30:29,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 04:30:29,148 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 63 [2020-09-25 04:30:29,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:29,148 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 04:30:29,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:30:29,149 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 04:30:29,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 04:30:29,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:29,158 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:29,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:30:29,159 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:29,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:29,159 INFO L82 PathProgramCache]: Analyzing trace with hash 821407407, now seen corresponding path program 1 times [2020-09-25 04:30:29,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:29,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533309582] [2020-09-25 04:30:29,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:29,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:29,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:29,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:29,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:30,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:31,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:31,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:31,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:31,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:34,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:34,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 04:30:34,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:30:34,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 04:30:34,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:34,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:34,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 04:30:34,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 04:30:34,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:30:34,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:34,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:34,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:34,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:34,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:34,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:30:34,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:34,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:34,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:30:34,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:34,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:34,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:34,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:30:34,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:34,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 04:30:34,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:34,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:34,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:34,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:34,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 04:30:34,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:34,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533309582] [2020-09-25 04:30:34,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:34,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:34,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185542472] [2020-09-25 04:30:34,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:34,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:34,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:34,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:34,631 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 5 states. [2020-09-25 04:30:36,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:36,433 INFO L93 Difference]: Finished difference Result 1375 states and 1726 transitions. [2020-09-25 04:30:36,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:36,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-25 04:30:36,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:36,442 INFO L225 Difference]: With dead ends: 1375 [2020-09-25 04:30:36,443 INFO L226 Difference]: Without dead ends: 814 [2020-09-25 04:30:36,445 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 04:30:36,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-09-25 04:30:36,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 576. [2020-09-25 04:30:36,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 04:30:36,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 04:30:36,488 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 146 [2020-09-25 04:30:36,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:36,489 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 04:30:36,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:36,489 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 04:30:36,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 04:30:36,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:36,493 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:36,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:30:36,494 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:36,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:36,494 INFO L82 PathProgramCache]: Analyzing trace with hash -651267958, now seen corresponding path program 1 times [2020-09-25 04:30:36,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:36,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388485144] [2020-09-25 04:30:36,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:36,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:36,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:36,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:36,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:37,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:37,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:37,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:37,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:41,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 04:30:41,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:30:41,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:30:41,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:41,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:41,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:41,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 04:30:41,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 04:30:41,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:30:41,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:41,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:41,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:41,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:41,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:30:41,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:41,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:41,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:41,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:30:41,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:41,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:41,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:30:41,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:41,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 04:30:41,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:41,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:41,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:41,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:41,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 04:30:41,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:41,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388485144] [2020-09-25 04:30:41,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:41,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:41,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664120264] [2020-09-25 04:30:41,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:41,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:41,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:41,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:41,793 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 5 states. [2020-09-25 04:30:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:43,442 INFO L93 Difference]: Finished difference Result 1451 states and 1871 transitions. [2020-09-25 04:30:43,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:43,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-25 04:30:43,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:43,450 INFO L225 Difference]: With dead ends: 1451 [2020-09-25 04:30:43,452 INFO L226 Difference]: Without dead ends: 890 [2020-09-25 04:30:43,459 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 04:30:43,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-09-25 04:30:43,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 880. [2020-09-25 04:30:43,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-09-25 04:30:43,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1113 transitions. [2020-09-25 04:30:43,503 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1113 transitions. Word has length 146 [2020-09-25 04:30:43,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:43,505 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 1113 transitions. [2020-09-25 04:30:43,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:43,505 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1113 transitions. [2020-09-25 04:30:43,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 04:30:43,510 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:43,510 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:43,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:30:43,510 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:43,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:43,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1962223494, now seen corresponding path program 1 times [2020-09-25 04:30:43,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:43,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584769150] [2020-09-25 04:30:43,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:43,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:43,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:43,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:44,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:45,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:45,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:45,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:45,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:48,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:48,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 04:30:48,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:30:48,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 04:30:48,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:48,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:48,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 04:30:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 04:30:48,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:48,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:48,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:48,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:48,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:48,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:48,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:30:48,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:48,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:48,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:48,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:48,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:48,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:48,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:48,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:30:48,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:48,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 04:30:48,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:48,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:48,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:30:48,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:30:48,845 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:48,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584769150] [2020-09-25 04:30:48,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:48,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:48,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370012881] [2020-09-25 04:30:48,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:48,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:48,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:48,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:48,849 INFO L87 Difference]: Start difference. First operand 880 states and 1113 transitions. Second operand 5 states. [2020-09-25 04:30:50,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:50,931 INFO L93 Difference]: Finished difference Result 2383 states and 3137 transitions. [2020-09-25 04:30:50,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:50,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-25 04:30:50,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:50,941 INFO L225 Difference]: With dead ends: 2383 [2020-09-25 04:30:50,941 INFO L226 Difference]: Without dead ends: 1518 [2020-09-25 04:30:50,945 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 04:30:50,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2020-09-25 04:30:50,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1488. [2020-09-25 04:30:50,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2020-09-25 04:30:50,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1841 transitions. [2020-09-25 04:30:50,992 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1841 transitions. Word has length 152 [2020-09-25 04:30:50,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:50,993 INFO L479 AbstractCegarLoop]: Abstraction has 1488 states and 1841 transitions. [2020-09-25 04:30:50,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:50,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1841 transitions. [2020-09-25 04:30:50,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 04:30:50,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:50,996 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:50,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:30:50,997 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:50,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:50,997 INFO L82 PathProgramCache]: Analyzing trace with hash 936089478, now seen corresponding path program 1 times [2020-09-25 04:30:50,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:50,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542772926] [2020-09-25 04:30:50,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:51,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:51,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:52,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:52,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:53,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:55,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:55,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 04:30:55,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:30:55,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4162 [2020-09-25 04:30:55,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:55,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:55,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:55,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-25 04:30:55,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 04:30:55,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:55,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:55,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:55,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:55,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:55,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:55,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:30:55,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:55,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:55,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:55,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:55,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:55,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:55,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 04:30:55,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:55,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 04:30:55,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:55,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:55,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:55,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:55,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 04:30:55,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:55,482 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:55,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542772926] [2020-09-25 04:30:55,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:55,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:55,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333500801] [2020-09-25 04:30:55,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:55,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:55,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:55,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:55,486 INFO L87 Difference]: Start difference. First operand 1488 states and 1841 transitions. Second operand 5 states. [2020-09-25 04:30:57,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:57,440 INFO L93 Difference]: Finished difference Result 3589 states and 4602 transitions. [2020-09-25 04:30:57,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:57,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-09-25 04:30:57,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:57,458 INFO L225 Difference]: With dead ends: 3589 [2020-09-25 04:30:57,458 INFO L226 Difference]: Without dead ends: 2116 [2020-09-25 04:30:57,463 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 04:30:57,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2020-09-25 04:30:57,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 1646. [2020-09-25 04:30:57,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1646 states. [2020-09-25 04:30:57,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2032 transitions. [2020-09-25 04:30:57,529 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2032 transitions. Word has length 171 [2020-09-25 04:30:57,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:57,530 INFO L479 AbstractCegarLoop]: Abstraction has 1646 states and 2032 transitions. [2020-09-25 04:30:57,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:57,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2032 transitions. [2020-09-25 04:30:57,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 04:30:57,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:57,534 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:57,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:30:57,535 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:57,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:57,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1249398646, now seen corresponding path program 1 times [2020-09-25 04:30:57,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:57,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367621395] [2020-09-25 04:30:57,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:57,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:57,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:57,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:01,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:01,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:01,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:02,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:02,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 04:31:02,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:02,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 04:31:02,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:02,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:02,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:02,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-09-25 04:31:02,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 04:31:02,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:31:02,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:02,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:02,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:02,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:02,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:02,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:31:02,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:02,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:02,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:02,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:02,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:02,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:02,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:02,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:02,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 04:31:02,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:02,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 04:31:02,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:02,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:02,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:02,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:02,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 04:31:02,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:02,971 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:02,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367621395] [2020-09-25 04:31:02,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:02,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:02,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873323891] [2020-09-25 04:31:02,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:02,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:02,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:02,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:02,975 INFO L87 Difference]: Start difference. First operand 1646 states and 2032 transitions. Second operand 5 states. [2020-09-25 04:31:05,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:05,155 INFO L93 Difference]: Finished difference Result 4069 states and 5139 transitions. [2020-09-25 04:31:05,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:05,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-09-25 04:31:05,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:05,168 INFO L225 Difference]: With dead ends: 4069 [2020-09-25 04:31:05,169 INFO L226 Difference]: Without dead ends: 2438 [2020-09-25 04:31:05,175 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 04:31:05,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2020-09-25 04:31:05,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 2409. [2020-09-25 04:31:05,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2409 states. [2020-09-25 04:31:05,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 2952 transitions. [2020-09-25 04:31:05,242 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 2952 transitions. Word has length 185 [2020-09-25 04:31:05,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:05,243 INFO L479 AbstractCegarLoop]: Abstraction has 2409 states and 2952 transitions. [2020-09-25 04:31:05,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:05,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 2952 transitions. [2020-09-25 04:31:05,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 04:31:05,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:05,248 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:05,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:31:05,249 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:05,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:05,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1214059767, now seen corresponding path program 1 times [2020-09-25 04:31:05,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:05,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096586161] [2020-09-25 04:31:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:05,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:05,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:05,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:06,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:06,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking...