/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem01_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:13:15,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:13:15,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:13:15,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:13:15,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:13:15,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:13:15,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:13:15,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:13:15,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:13:15,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:13:15,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:13:15,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:13:15,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:13:15,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:13:15,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:13:15,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:13:15,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:13:15,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:13:15,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:13:15,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:13:15,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:13:15,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:13:15,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:13:15,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:13:15,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:13:15,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:13:15,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:13:15,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:13:15,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:13:15,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:13:15,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:13:15,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:13:15,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:13:15,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:13:15,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:13:15,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:13:15,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:13:15,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:13:15,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:13:15,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:13:15,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:13:15,734 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 11:13:15,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:13:15,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:13:15,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:13:15,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:13:15,781 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:13:15,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:13:15,781 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:13:15,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:13:15,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:13:15,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:13:15,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:13:15,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:13:15,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:13:15,784 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:13:15,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:13:15,784 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:13:15,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:13:15,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:13:15,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:13:15,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:13:15,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:13:15,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:13:15,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:13:15,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:13:15,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:13:15,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:13:15,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:13:15,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:13:15,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:13:15,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:13:16,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:13:16,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:13:16,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:13:16,257 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:13:16,257 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:13:16,258 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-25 11:13:16,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95617c5c2/cfca1755ce6742f68af81010da714c9d/FLAGed7e3f45e [2020-09-25 11:13:16,995 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:13:16,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-25 11:13:17,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95617c5c2/cfca1755ce6742f68af81010da714c9d/FLAGed7e3f45e [2020-09-25 11:13:17,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95617c5c2/cfca1755ce6742f68af81010da714c9d [2020-09-25 11:13:17,249 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:13:17,255 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:13:17,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:13:17,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:13:17,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:13:17,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:13:17" (1/1) ... [2020-09-25 11:13:17,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:17, skipping insertion in model container [2020-09-25 11:13:17,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:13:17" (1/1) ... [2020-09-25 11:13:17,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:13:17,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:13:17,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:13:17,797 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:13:18,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:13:18,119 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:13:18,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:18 WrapperNode [2020-09-25 11:13:18,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:13:18,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:13:18,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:13:18,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:13:18,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:18" (1/1) ... [2020-09-25 11:13:18,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:18" (1/1) ... [2020-09-25 11:13:18,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:18" (1/1) ... [2020-09-25 11:13:18,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:18" (1/1) ... [2020-09-25 11:13:18,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:18" (1/1) ... [2020-09-25 11:13:18,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:18" (1/1) ... [2020-09-25 11:13:18,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:18" (1/1) ... [2020-09-25 11:13:18,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:13:18,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:13:18,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:13:18,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:13:18,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:18" (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 11:13:18,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:13:18,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:13:18,345 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:13:18,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:13:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:13:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:13:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:13:18,347 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:13:18,348 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:13:18,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:13:18,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:13:19,958 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:13:19,958 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:13:19,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:13:19 BoogieIcfgContainer [2020-09-25 11:13:19,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:13:19,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:13:19,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:13:19,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:13:19,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:13:17" (1/3) ... [2020-09-25 11:13:19,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:13:19, skipping insertion in model container [2020-09-25 11:13:19,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:18" (2/3) ... [2020-09-25 11:13:19,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:13:19, skipping insertion in model container [2020-09-25 11:13:19,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:13:19" (3/3) ... [2020-09-25 11:13:19,988 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2020-09-25 11:13:20,000 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:13:20,011 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:13:20,034 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:13:20,070 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:13:20,070 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:13:20,070 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:13:20,070 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:13:20,071 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:13:20,071 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:13:20,071 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:13:20,071 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:13:20,120 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 11:13:20,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 11:13:20,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:20,142 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] [2020-09-25 11:13:20,143 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:20,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:20,151 INFO L82 PathProgramCache]: Analyzing trace with hash 576098423, now seen corresponding path program 1 times [2020-09-25 11:13:20,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:20,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866462069] [2020-09-25 11:13:20,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:20,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:20,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:21,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:22,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:23,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:24,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:24,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:24,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:25,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:25,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 11:13:25,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:13:25,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:13:25,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:25,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:13:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:13:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 11:13:25,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:13:25,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:25,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:25,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:25,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:25,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:25,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 11:13:25,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:25,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:25,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:25,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:25,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:13:25,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:25,796 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 11:13:25,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866462069] [2020-09-25 11:13:25,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:13:25,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:13:25,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144098933] [2020-09-25 11:13:25,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:13:25,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:25,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:13:25,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:13:25,829 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 11:13:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:27,964 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 11:13:27,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:13:27,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-09-25 11:13:27,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:27,992 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 11:13:27,992 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 11:13:28,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:13:28,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 11:13:28,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 11:13:28,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 11:13:28,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 11:13:28,139 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 122 [2020-09-25 11:13:28,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:28,140 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 11:13:28,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:13:28,141 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 11:13:28,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 11:13:28,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:28,155 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-09-25 11:13:28,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:13:28,156 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:28,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:28,158 INFO L82 PathProgramCache]: Analyzing trace with hash -329610872, now seen corresponding path program 1 times [2020-09-25 11:13:28,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:28,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352823035] [2020-09-25 11:13:28,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:28,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:28,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:28,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:30,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:30,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 11:13:30,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:13:30,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2152 [2020-09-25 11:13:30,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:30,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:13:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 11:13:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 11:13:30,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:30,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:30,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:30,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:30,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:30,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:30,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:13:30,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:30,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:30,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:30,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:30,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:30,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:13:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:30,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:30,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:30,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:13:30,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:30,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:13:30,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:30,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:30,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:13:30,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:30,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352823035] [2020-09-25 11:13:30,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:30,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:13:30,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142408561] [2020-09-25 11:13:30,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:13:30,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:30,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:13:30,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:13:30,713 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 11:13:32,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:32,891 INFO L93 Difference]: Finished difference Result 1654 states and 2024 transitions. [2020-09-25 11:13:32,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:13:32,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-25 11:13:32,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:32,898 INFO L225 Difference]: With dead ends: 1654 [2020-09-25 11:13:32,898 INFO L226 Difference]: Without dead ends: 1014 [2020-09-25 11:13:32,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:13:32,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-09-25 11:13:32,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 950. [2020-09-25 11:13:32,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 11:13:32,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1142 transitions. [2020-09-25 11:13:32,936 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1142 transitions. Word has length 143 [2020-09-25 11:13:32,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:32,937 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1142 transitions. [2020-09-25 11:13:32,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:13:32,937 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1142 transitions. [2020-09-25 11:13:32,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 11:13:32,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:32,943 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 11:13:32,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:13:32,943 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:32,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:32,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1723591899, now seen corresponding path program 1 times [2020-09-25 11:13:32,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:32,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974409857] [2020-09-25 11:13:32,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:33,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:33,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:33,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:33,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:34,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:37,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:37,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 11:13:37,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:13:37,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 11:13:37,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:37,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:37,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:13:37,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-09-25 11:13:37,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 11:13:37,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:38,718 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-09-25 11:13:38,955 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2020-09-25 11:13:39,233 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 52 [2020-09-25 11:13:39,508 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 49 [2020-09-25 11:13:39,755 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 45 [2020-09-25 11:13:40,018 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 41 [2020-09-25 11:13:40,232 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 35 [2020-09-25 11:13:40,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:40,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:40,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:40,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:40,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:40,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:13:40,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:40,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:40,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:40,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:40,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:40,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:40,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:13:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:40,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:40,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:40,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:13:40,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:40,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:13:40,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:40,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:40,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:40,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:40,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:40,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:40,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 11:13:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:40,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:40,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:40,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:13:40,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:40,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 11:13:40,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:40,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:40,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:13:40,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:40,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 11:13:40,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 11:13:40,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974409857] [2020-09-25 11:13:40,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:40,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:13:40,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997620701] [2020-09-25 11:13:40,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:13:40,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:40,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:13:40,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:13:40,830 INFO L87 Difference]: Start difference. First operand 950 states and 1142 transitions. Second operand 15 states. [2020-09-25 11:13:41,489 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-09-25 11:13:41,726 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-09-25 11:13:42,521 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 114 [2020-09-25 11:13:44,041 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 111 [2020-09-25 11:13:44,765 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 108 [2020-09-25 11:13:45,276 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 105 [2020-09-25 11:13:45,664 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 100 [2020-09-25 11:13:46,126 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-09-25 11:13:46,414 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-25 11:13:46,694 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-25 11:13:48,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:48,223 INFO L93 Difference]: Finished difference Result 2373 states and 3025 transitions. [2020-09-25 11:13:48,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 11:13:48,224 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 160 [2020-09-25 11:13:48,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:48,238 INFO L225 Difference]: With dead ends: 2373 [2020-09-25 11:13:48,238 INFO L226 Difference]: Without dead ends: 1447 [2020-09-25 11:13:48,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-09-25 11:13:48,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2020-09-25 11:13:48,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1396. [2020-09-25 11:13:48,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1396 states. [2020-09-25 11:13:48,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1637 transitions. [2020-09-25 11:13:48,309 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1637 transitions. Word has length 160 [2020-09-25 11:13:48,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:48,311 INFO L479 AbstractCegarLoop]: Abstraction has 1396 states and 1637 transitions. [2020-09-25 11:13:48,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:13:48,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1637 transitions. [2020-09-25 11:13:48,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 11:13:48,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:48,319 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:48,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:13:48,319 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:48,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:48,320 INFO L82 PathProgramCache]: Analyzing trace with hash -2123224051, now seen corresponding path program 1 times [2020-09-25 11:13:48,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:48,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371078583] [2020-09-25 11:13:48,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:48,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:48,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:48,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:49,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:49,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:51,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:51,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:52,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:53,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:53,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 11:13:53,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:13:53,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 11:13:53,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:53,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:13:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 11:13:53,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 11:13:53,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:53,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:53,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:53,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:53,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:53,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:53,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:13:53,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:53,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:53,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:53,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:53,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:13:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:53,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:53,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:53,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:13:53,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:53,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 11:13:53,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:53,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:53,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:13:53,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:53,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:13:53,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:53,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 11:13:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:53,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:53,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:53,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:53,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:53,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:13:53,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 11:13:53,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:53,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:13:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:13:53,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:13:53,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:54,072 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:13:54,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371078583] [2020-09-25 11:13:54,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:54,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:13:54,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280309778] [2020-09-25 11:13:54,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:13:54,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:54,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:13:54,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:13:54,075 INFO L87 Difference]: Start difference. First operand 1396 states and 1637 transitions. Second operand 10 states. [2020-09-25 11:13:59,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:59,627 INFO L93 Difference]: Finished difference Result 3693 states and 4629 transitions. [2020-09-25 11:13:59,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 11:13:59,629 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 174 [2020-09-25 11:13:59,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:59,643 INFO L225 Difference]: With dead ends: 3693 [2020-09-25 11:13:59,643 INFO L226 Difference]: Without dead ends: 2321 [2020-09-25 11:13:59,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2020-09-25 11:13:59,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2321 states. [2020-09-25 11:13:59,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2321 to 2200. [2020-09-25 11:13:59,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-09-25 11:13:59,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 2597 transitions. [2020-09-25 11:13:59,721 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 2597 transitions. Word has length 174 [2020-09-25 11:13:59,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:59,722 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 2597 transitions. [2020-09-25 11:13:59,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:13:59,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 2597 transitions. [2020-09-25 11:13:59,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 11:13:59,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:59,733 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:59,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:13:59,733 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:59,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:59,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1524876455, now seen corresponding path program 1 times [2020-09-25 11:13:59,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:59,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497828730] [2020-09-25 11:13:59,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:59,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:59,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:00,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:00,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:00,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:01,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:04,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:04,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:04,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 11:14:04,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:14:04,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-09-25 11:14:04,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:04,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:14:04,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:14:04,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 11:14:04,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:14:05,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:05,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:05,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:05,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:05,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:05,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 11:14:05,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:05,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:05,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:05,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:05,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:14:05,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:05,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:05,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:05,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:05,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:05,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:14:05,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:14:05,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 11:14:05,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:05,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:05,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:14:05,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:05,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 11:14:05,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:05,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 11:14:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:05,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:05,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:05,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:05,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:14:05,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:14:05,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-25 11:14:05,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:05,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:05,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:14:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:14:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 11:14:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 50 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:14:05,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497828730] [2020-09-25 11:14:05,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:05,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 11:14:05,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794324511] [2020-09-25 11:14:05,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 11:14:05,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:05,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 11:14:05,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:14:05,915 INFO L87 Difference]: Start difference. First operand 2200 states and 2597 transitions. Second operand 14 states.