/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=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:45:29,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:45:29,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:45:29,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:45:29,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:45:29,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:45:29,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:45:29,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:45:29,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:45:29,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:45:29,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:45:29,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:45:29,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:45:29,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:45:29,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:45:29,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:45:29,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:45:29,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:45:29,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:45:29,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:45:29,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:45:29,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:45:29,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:45:29,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:45:29,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:45:29,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:45:29,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:45:29,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:45:29,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:45:29,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:45:29,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:45:29,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:45:29,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:45:29,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:45:29,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:45:29,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:45:29,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:45:29,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:45:29,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:45:29,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:45:29,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:45:29,727 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 06:45:29,755 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:45:29,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:45:29,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:45:29,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:45:29,757 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:45:29,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:45:29,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:45:29,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:45:29,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:45:29,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:45:29,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:45:29,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:45:29,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:45:29,759 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:45:29,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:45:29,759 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:45:29,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:45:29,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:45:29,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:45:29,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:45:29,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:45:29,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:45:29,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:45:29,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:45:29,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:45:29,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:45:29,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:45:29,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:45:29,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:45:29,763 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:45:30,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:45:30,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:45:30,282 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:45:30,284 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:45:30,286 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:45:30,287 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-09-25 06:45:30,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5be6957c6/cec045b6fd894c198418a79a88c88c48/FLAG95ff93cf3 [2020-09-25 06:45:31,019 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:45:31,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-09-25 06:45:31,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5be6957c6/cec045b6fd894c198418a79a88c88c48/FLAG95ff93cf3 [2020-09-25 06:45:31,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5be6957c6/cec045b6fd894c198418a79a88c88c48 [2020-09-25 06:45:31,271 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:45:31,277 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:45:31,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:45:31,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:45:31,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:45:31,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:45:31" (1/1) ... [2020-09-25 06:45:31,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c3c9999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:31, skipping insertion in model container [2020-09-25 06:45:31,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:45:31" (1/1) ... [2020-09-25 06:45:31,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:45:31,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:45:31,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:45:31,889 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:45:32,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:45:32,098 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:45:32,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32 WrapperNode [2020-09-25 06:45:32,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:45:32,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:45:32,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:45:32,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:45:32,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32" (1/1) ... [2020-09-25 06:45:32,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32" (1/1) ... [2020-09-25 06:45:32,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32" (1/1) ... [2020-09-25 06:45:32,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32" (1/1) ... [2020-09-25 06:45:32,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32" (1/1) ... [2020-09-25 06:45:32,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32" (1/1) ... [2020-09-25 06:45:32,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32" (1/1) ... [2020-09-25 06:45:32,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:45:32,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:45:32,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:45:32,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:45:32,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32" (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 06:45:32,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:45:32,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:45:32,294 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:45:32,295 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:45:32,295 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:45:32,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:45:32,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:45:32,295 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:45:32,295 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:45:32,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:45:32,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:45:33,611 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:45:33,612 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:45:33,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:45:33 BoogieIcfgContainer [2020-09-25 06:45:33,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:45:33,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:45:33,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:45:33,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:45:33,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:45:31" (1/3) ... [2020-09-25 06:45:33,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ee9fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:45:33, skipping insertion in model container [2020-09-25 06:45:33,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:32" (2/3) ... [2020-09-25 06:45:33,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ee9fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:45:33, skipping insertion in model container [2020-09-25 06:45:33,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:45:33" (3/3) ... [2020-09-25 06:45:33,631 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label42.c [2020-09-25 06:45:33,642 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:45:33,654 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:45:33,676 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:45:33,711 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:45:33,711 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:45:33,711 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:45:33,711 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:45:33,712 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:45:33,712 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:45:33,712 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:45:33,712 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:45:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:45:33,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 06:45:33,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:33,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:33,766 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:33,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:33,775 INFO L82 PathProgramCache]: Analyzing trace with hash -551630175, now seen corresponding path program 1 times [2020-09-25 06:45:33,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:33,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034162266] [2020-09-25 06:45:33,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:34,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:34,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:34,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:35,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:37,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:37,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:39,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:39,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:39,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 06:45:39,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:45:39,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-09-25 06:45:39,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:39,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:39,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:45:39,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:45:39,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 06:45:39,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:45:39,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:39,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:39,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:39,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:39,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:39,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:45:39,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:39,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:39,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:39,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:39,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:45:39,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:39,506 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 06:45:39,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034162266] [2020-09-25 06:45:39,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:45:39,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:45:39,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500151204] [2020-09-25 06:45:39,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:39,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:39,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:39,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:39,544 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 06:45:42,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:42,559 INFO L93 Difference]: Finished difference Result 1539 states and 2132 transitions. [2020-09-25 06:45:42,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:45:42,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-09-25 06:45:42,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:42,590 INFO L225 Difference]: With dead ends: 1539 [2020-09-25 06:45:42,590 INFO L226 Difference]: Without dead ends: 935 [2020-09-25 06:45:42,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:45:42,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-09-25 06:45:42,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 878. [2020-09-25 06:45:42,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-25 06:45:42,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1089 transitions. [2020-09-25 06:45:42,727 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1089 transitions. Word has length 126 [2020-09-25 06:45:42,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:42,728 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1089 transitions. [2020-09-25 06:45:42,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:45:42,728 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1089 transitions. [2020-09-25 06:45:42,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 06:45:42,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:42,738 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:42,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:45:42,738 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:42,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:42,739 INFO L82 PathProgramCache]: Analyzing trace with hash 2026408437, now seen corresponding path program 1 times [2020-09-25 06:45:42,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:42,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872481464] [2020-09-25 06:45:42,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:42,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:42,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:43,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:43,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:43,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:44,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:45,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:47,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:47,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 06:45:47,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:45:47,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 06:45:47,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:47,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:47,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:47,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:45:47,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 06:45:47,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:45:47,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:47,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:48,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:48,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:48,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:48,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:45:48,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:48,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:48,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:48,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:48,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:48,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 06:45:48,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:48,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:48,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:48,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:45:48,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:48,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:45:48,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:48,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:48,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:48,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:48,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:45:48,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:45:48,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872481464] [2020-09-25 06:45:48,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:48,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:45:48,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814016083] [2020-09-25 06:45:48,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:48,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:48,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:48,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:48,116 INFO L87 Difference]: Start difference. First operand 878 states and 1089 transitions. Second operand 5 states. [2020-09-25 06:45:50,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:50,350 INFO L93 Difference]: Finished difference Result 2247 states and 2909 transitions. [2020-09-25 06:45:50,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:45:50,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-09-25 06:45:50,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:50,361 INFO L225 Difference]: With dead ends: 2247 [2020-09-25 06:45:50,361 INFO L226 Difference]: Without dead ends: 1391 [2020-09-25 06:45:50,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:45:50,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-09-25 06:45:50,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1336. [2020-09-25 06:45:50,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-09-25 06:45:50,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1631 transitions. [2020-09-25 06:45:50,422 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1631 transitions. Word has length 144 [2020-09-25 06:45:50,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:50,423 INFO L479 AbstractCegarLoop]: Abstraction has 1336 states and 1631 transitions. [2020-09-25 06:45:50,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:45:50,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1631 transitions. [2020-09-25 06:45:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 06:45:50,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:50,429 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:50,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:45:50,430 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:50,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:50,430 INFO L82 PathProgramCache]: Analyzing trace with hash -149723680, now seen corresponding path program 1 times [2020-09-25 06:45:50,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:50,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343679031] [2020-09-25 06:45:50,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:50,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:50,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:50,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:50,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:52,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:55,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:55,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 06:45:55,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:45:55,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 06:45:55,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:55,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:55,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:55,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 06:45:55,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 06:45:55,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:55,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:55,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:55,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:55,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:55,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:55,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 06:45:55,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:55,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:55,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:55,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:55,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:55,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:55,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:55,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:55,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:55,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:45:55,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:55,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:45:55,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:55,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:55,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:55,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:55,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:45:55,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:55,743 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:45:55,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343679031] [2020-09-25 06:45:55,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:55,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:45:55,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279862144] [2020-09-25 06:45:55,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:55,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:55,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:55,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:55,749 INFO L87 Difference]: Start difference. First operand 1336 states and 1631 transitions. Second operand 5 states. [2020-09-25 06:45:58,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:58,069 INFO L93 Difference]: Finished difference Result 3603 states and 4612 transitions. [2020-09-25 06:45:58,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:45:58,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-09-25 06:45:58,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:58,087 INFO L225 Difference]: With dead ends: 3603 [2020-09-25 06:45:58,087 INFO L226 Difference]: Without dead ends: 2289 [2020-09-25 06:45:58,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:45:58,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-09-25 06:45:58,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2249. [2020-09-25 06:45:58,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2249 states. [2020-09-25 06:45:58,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 2723 transitions. [2020-09-25 06:45:58,199 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 2723 transitions. Word has length 150 [2020-09-25 06:45:58,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:58,200 INFO L479 AbstractCegarLoop]: Abstraction has 2249 states and 2723 transitions. [2020-09-25 06:45:58,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:45:58,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 2723 transitions. [2020-09-25 06:45:58,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 06:45:58,213 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:58,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:58,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:45:58,214 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:58,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:58,214 INFO L82 PathProgramCache]: Analyzing trace with hash 537580245, now seen corresponding path program 1 times [2020-09-25 06:45:58,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:58,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880448569] [2020-09-25 06:45:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:58,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:58,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:58,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:58,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:59,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:59,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:00,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:00,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:03,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:03,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 06:46:03,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:46:03,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 06:46:03,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:03,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:03,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 06:46:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 06:46:03,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:03,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:03,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:03,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:03,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:03,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:03,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:46:03,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:03,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:03,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:03,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:03,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:03,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:03,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:03,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:03,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:46:03,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:03,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 06:46:03,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:03,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:03,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:03,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:46:03,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:46:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:03,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880448569] [2020-09-25 06:46:03,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:03,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:03,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749583965] [2020-09-25 06:46:03,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:03,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:03,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:03,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:03,613 INFO L87 Difference]: Start difference. First operand 2249 states and 2723 transitions. Second operand 5 states. [2020-09-25 06:46:05,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:05,657 INFO L93 Difference]: Finished difference Result 5438 states and 6872 transitions. [2020-09-25 06:46:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:46:05,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 06:46:05,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:05,677 INFO L225 Difference]: With dead ends: 5438 [2020-09-25 06:46:05,677 INFO L226 Difference]: Without dead ends: 3211 [2020-09-25 06:46:05,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:46:05,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2020-09-25 06:46:05,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 3011. [2020-09-25 06:46:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3011 states. [2020-09-25 06:46:05,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 3640 transitions. [2020-09-25 06:46:05,792 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 3640 transitions. Word has length 161 [2020-09-25 06:46:05,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:05,792 INFO L479 AbstractCegarLoop]: Abstraction has 3011 states and 3640 transitions. [2020-09-25 06:46:05,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:05,793 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 3640 transitions. [2020-09-25 06:46:05,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 06:46:05,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:05,803 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:05,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:46:05,803 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:05,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:05,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1033135550, now seen corresponding path program 1 times [2020-09-25 06:46:05,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:05,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770391980] [2020-09-25 06:46:05,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:05,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:05,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:05,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:07,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:10,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:10,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 06:46:10,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:46:10,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:46:10,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:10,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:10,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:46:10,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:46:10,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:10,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:10,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:10,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:10,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:10,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:10,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:46:10,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:10,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:10,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:10,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:10,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:10,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:10,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:10,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:10,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:10,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:46:10,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:10,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:46:10,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:10,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:10,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:10,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:46:10,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:46:10,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:46:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:10,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:10,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:10,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:46:10,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:10,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 06:46:10,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:10,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:10,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:46:10,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:11,045 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:46:11,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770391980] [2020-09-25 06:46:11,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:11,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:46:11,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633790802] [2020-09-25 06:46:11,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:46:11,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:11,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:46:11,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:11,048 INFO L87 Difference]: Start difference. First operand 3011 states and 3640 transitions. Second operand 7 states. [2020-09-25 06:46:13,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:13,306 INFO L93 Difference]: Finished difference Result 7120 states and 8774 transitions. [2020-09-25 06:46:13,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:46:13,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-09-25 06:46:13,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:13,329 INFO L225 Difference]: With dead ends: 7120 [2020-09-25 06:46:13,330 INFO L226 Difference]: Without dead ends: 4131 [2020-09-25 06:46:13,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:46:13,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4131 states. [2020-09-25 06:46:13,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4131 to 3624. [2020-09-25 06:46:13,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3624 states. [2020-09-25 06:46:13,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 4401 transitions. [2020-09-25 06:46:13,476 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 4401 transitions. Word has length 163 [2020-09-25 06:46:13,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:13,476 INFO L479 AbstractCegarLoop]: Abstraction has 3624 states and 4401 transitions. [2020-09-25 06:46:13,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:46:13,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 4401 transitions. [2020-09-25 06:46:13,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 06:46:13,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:13,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:13,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:46:13,492 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:13,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:13,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1209881623, now seen corresponding path program 1 times [2020-09-25 06:46:13,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:13,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120473211] [2020-09-25 06:46:13,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:13,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:13,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:13,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:14,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:15,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:15,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:16,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:16,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:18,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:18,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 06:46:18,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:46:18,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 06:46:18,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:18,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:18,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:18,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 06:46:18,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 06:46:18,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:18,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:18,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:18,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:18,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:18,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:18,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:46:18,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:18,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:18,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:18,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:18,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:18,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:18,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:18,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:18,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:18,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:46:18,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:18,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 06:46:18,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:18,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:18,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:18,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:46:18,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:18,799 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:18,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120473211] [2020-09-25 06:46:18,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:18,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:18,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748628785] [2020-09-25 06:46:18,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:18,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:18,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:18,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:18,801 INFO L87 Difference]: Start difference. First operand 3624 states and 4401 transitions. Second operand 5 states.