/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=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:05:55,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:05:55,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:05:55,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:05:55,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:05:55,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:05:55,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:05:55,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:05:55,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:05:55,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:05:55,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:05:55,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:05:55,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:05:55,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:05:55,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:05:55,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:05:55,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:05:55,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:05:55,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:05:55,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:05:55,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:05:55,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:05:55,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:05:55,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:05:55,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:05:55,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:05:55,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:05:55,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:05:55,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:05:55,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:05:55,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:05:55,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:05:55,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:05:55,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:05:55,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:05:55,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:05:55,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:05:55,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:05:55,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:05:55,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:05:55,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:05:55,169 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 09:05:55,199 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:05:55,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:05:55,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:05:55,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:05:55,203 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:05:55,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:05:55,204 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:05:55,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:05:55,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:05:55,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:05:55,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:05:55,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:05:55,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:05:55,206 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:05:55,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:05:55,207 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:05:55,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:05:55,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:05:55,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:05:55,207 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:05:55,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:05:55,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:05:55,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:05:55,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:05:55,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:05:55,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:05:55,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:05:55,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:05:55,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:05:55,210 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:05:55,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:05:55,698 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:05:55,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:05:55,704 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:05:55,704 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:05:55,706 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-09-25 09:05:55,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/701cf2a1b/426154fb45b740249b6955ebf6a3e754/FLAGbecbd8135 [2020-09-25 09:05:56,495 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:05:56,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-09-25 09:05:56,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/701cf2a1b/426154fb45b740249b6955ebf6a3e754/FLAGbecbd8135 [2020-09-25 09:05:56,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/701cf2a1b/426154fb45b740249b6955ebf6a3e754 [2020-09-25 09:05:56,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:05:56,768 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:05:56,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:56,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:05:56,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:05:56,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:56" (1/1) ... [2020-09-25 09:05:56,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283e1fb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:56, skipping insertion in model container [2020-09-25 09:05:56,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:56" (1/1) ... [2020-09-25 09:05:56,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:05:56,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:05:57,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:57,349 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:05:57,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:57,617 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:05:57,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:57 WrapperNode [2020-09-25 09:05:57,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:57,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:05:57,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:05:57,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:05:57,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:57" (1/1) ... [2020-09-25 09:05:57,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:57" (1/1) ... [2020-09-25 09:05:57,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:57" (1/1) ... [2020-09-25 09:05:57,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:57" (1/1) ... [2020-09-25 09:05:57,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:57" (1/1) ... [2020-09-25 09:05:57,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:57" (1/1) ... [2020-09-25 09:05:57,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:57" (1/1) ... [2020-09-25 09:05:57,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:05:57,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:05:57,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:05:57,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:05:57,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:57" (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 09:05:57,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:05:57,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:05:57,859 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:05:57,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:05:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:05:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:05:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:05:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:05:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:05:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:05:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:05:59,346 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:05:59,346 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:05:59,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:59 BoogieIcfgContainer [2020-09-25 09:05:59,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:05:59,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:05:59,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:05:59,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:05:59,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:05:56" (1/3) ... [2020-09-25 09:05:59,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4f38e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:59, skipping insertion in model container [2020-09-25 09:05:59,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:57" (2/3) ... [2020-09-25 09:05:59,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4f38e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:59, skipping insertion in model container [2020-09-25 09:05:59,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:59" (3/3) ... [2020-09-25 09:05:59,366 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label38.c [2020-09-25 09:05:59,381 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:05:59,393 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:05:59,419 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:05:59,459 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:05:59,460 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:05:59,460 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:05:59,461 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:05:59,461 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:05:59,461 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:05:59,461 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:05:59,461 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:05:59,504 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:05:59,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 09:05:59,514 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:59,515 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] [2020-09-25 09:05:59,516 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:59,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:59,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1024488521, now seen corresponding path program 1 times [2020-09-25 09:05:59,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:59,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808696751] [2020-09-25 09:05:59,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:59,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:00,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:00,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:00,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:00,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 09:06:00,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:06:00,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 991 [2020-09-25 09:06:00,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:00,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:06:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 09:06:00,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:06:00,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:00,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:00,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:00,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:00,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:00,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:06:00,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:00,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:00,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:00,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:06:00,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:00,905 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 09:06:00,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808696751] [2020-09-25 09:06:00,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:00,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:06:00,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854179228] [2020-09-25 09:06:00,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:06:00,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:00,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:06:00,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:06:00,939 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 09:06:03,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:03,947 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-25 09:06:03,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:06:03,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-09-25 09:06:03,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:03,986 INFO L225 Difference]: With dead ends: 1352 [2020-09-25 09:06:03,986 INFO L226 Difference]: Without dead ends: 806 [2020-09-25 09:06:03,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:04,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-25 09:06:04,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-25 09:06:04,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-25 09:06:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-25 09:06:04,106 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 51 [2020-09-25 09:06:04,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:04,107 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-25 09:06:04,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:06:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-25 09:06:04,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 09:06:04,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:04,117 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:04,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:06:04,117 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:04,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:04,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1838754330, now seen corresponding path program 1 times [2020-09-25 09:06:04,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:04,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114488053] [2020-09-25 09:06:04,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:04,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:04,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:04,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:05,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:05,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:05,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:06,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:06,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 09:06:06,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:06:06,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2764 [2020-09-25 09:06:06,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:06,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:06:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 09:06:06,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:07,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:07,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:07,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:07,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:07,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:07,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 09:06:07,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:07,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:07,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:07,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:07,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:06:07,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:06:07,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:07,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:07,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:07,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:07,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:06:07,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:07,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 09:06:07,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:07,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:07,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:07,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:07,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 09:06:07,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:06:07,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114488053] [2020-09-25 09:06:07,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:07,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:06:07,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987545751] [2020-09-25 09:06:07,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:06:07,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:07,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:06:07,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:07,505 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 7 states. [2020-09-25 09:06:09,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:09,974 INFO L93 Difference]: Finished difference Result 2050 states and 2696 transitions. [2020-09-25 09:06:09,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:06:09,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-09-25 09:06:09,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:09,984 INFO L225 Difference]: With dead ends: 2050 [2020-09-25 09:06:09,984 INFO L226 Difference]: Without dead ends: 1338 [2020-09-25 09:06:09,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:06:09,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2020-09-25 09:06:10,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1188. [2020-09-25 09:06:10,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2020-09-25 09:06:10,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1541 transitions. [2020-09-25 09:06:10,051 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1541 transitions. Word has length 134 [2020-09-25 09:06:10,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:10,052 INFO L479 AbstractCegarLoop]: Abstraction has 1188 states and 1541 transitions. [2020-09-25 09:06:10,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:06:10,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1541 transitions. [2020-09-25 09:06:10,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 09:06:10,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:10,057 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:10,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:06:10,058 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:10,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:10,058 INFO L82 PathProgramCache]: Analyzing trace with hash -455767542, now seen corresponding path program 1 times [2020-09-25 09:06:10,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:10,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662386936] [2020-09-25 09:06:10,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:10,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:10,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:10,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:10,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:10,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:13,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:13,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 09:06:13,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:06:13,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3184 [2020-09-25 09:06:13,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:13,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:13,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:13,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 09:06:13,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 09:06:13,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:13,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:13,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:13,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:13,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:13,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:13,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:06:13,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:13,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:13,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:13,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:13,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:13,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:13,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:13,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:13,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:13,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:13,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 09:06:13,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:13,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:13,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 09:06:13,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:13,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662386936] [2020-09-25 09:06:13,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:13,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:06:13,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133907936] [2020-09-25 09:06:13,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:06:13,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:13,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:06:13,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:06:13,599 INFO L87 Difference]: Start difference. First operand 1188 states and 1541 transitions. Second operand 5 states. [2020-09-25 09:06:15,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:15,487 INFO L93 Difference]: Finished difference Result 2993 states and 4056 transitions. [2020-09-25 09:06:15,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:06:15,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 09:06:15,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:15,504 INFO L225 Difference]: With dead ends: 2993 [2020-09-25 09:06:15,505 INFO L226 Difference]: Without dead ends: 1970 [2020-09-25 09:06:15,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:06:15,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2020-09-25 09:06:15,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1948. [2020-09-25 09:06:15,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1948 states. [2020-09-25 09:06:15,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2480 transitions. [2020-09-25 09:06:15,598 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2480 transitions. Word has length 140 [2020-09-25 09:06:15,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:15,604 INFO L479 AbstractCegarLoop]: Abstraction has 1948 states and 2480 transitions. [2020-09-25 09:06:15,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:06:15,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2480 transitions. [2020-09-25 09:06:15,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 09:06:15,613 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:15,614 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:15,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:06:15,614 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:15,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:15,615 INFO L82 PathProgramCache]: Analyzing trace with hash 150860950, now seen corresponding path program 1 times [2020-09-25 09:06:15,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:15,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522353310] [2020-09-25 09:06:15,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:15,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:15,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:17,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:17,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:17,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:18,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:20,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:20,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 09:06:20,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:06:20,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4387 [2020-09-25 09:06:20,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:20,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:20,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:20,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:06:20,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 09:06:20,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:20,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:20,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:20,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:20,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:20,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:20,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:06:20,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:20,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:20,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:06:20,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:20,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:20,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:20,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:20,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 09:06:20,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:20,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-25 09:06:20,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:20,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:20,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:20,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:20,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 09:06:20,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:20,464 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:20,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522353310] [2020-09-25 09:06:20,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:20,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:06:20,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475363093] [2020-09-25 09:06:20,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:06:20,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:20,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:06:20,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:20,467 INFO L87 Difference]: Start difference. First operand 1948 states and 2480 transitions. Second operand 7 states. [2020-09-25 09:06:22,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:22,763 INFO L93 Difference]: Finished difference Result 4277 states and 5674 transitions. [2020-09-25 09:06:22,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:06:22,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-09-25 09:06:22,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:22,777 INFO L225 Difference]: With dead ends: 4277 [2020-09-25 09:06:22,777 INFO L226 Difference]: Without dead ends: 2494 [2020-09-25 09:06:22,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:06:22,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2020-09-25 09:06:22,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 2280. [2020-09-25 09:06:22,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2280 states. [2020-09-25 09:06:22,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 2798 transitions. [2020-09-25 09:06:22,945 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 2798 transitions. Word has length 159 [2020-09-25 09:06:22,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:22,946 INFO L479 AbstractCegarLoop]: Abstraction has 2280 states and 2798 transitions. [2020-09-25 09:06:22,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:06:22,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 2798 transitions. [2020-09-25 09:06:22,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 09:06:22,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:22,951 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:22,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:06:22,952 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:22,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:22,952 INFO L82 PathProgramCache]: Analyzing trace with hash 675385996, now seen corresponding path program 1 times [2020-09-25 09:06:22,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:22,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992225312] [2020-09-25 09:06:22,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:23,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:23,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:23,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:24,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:24,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:24,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:25,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:27,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:27,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:27,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:27,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:28,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:28,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-25 09:06:28,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 09:06:28,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 09:06:28,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:28,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:28,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:28,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:06:28,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 09:06:28,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:28,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:28,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:28,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:28,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:28,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:28,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:06:28,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:28,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:28,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:28,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:28,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:06:28,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:28,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:28,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:28,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:28,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:28,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:28,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:28,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 09:06:28,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:28,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:28,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:28,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:28,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 09:06:28,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:28,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:06:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:28,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:28,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:28,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:28,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:06:28,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:28,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-25 09:06:28,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:28,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:28,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:28,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:28,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:06:28,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:28,948 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 09:06:28,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992225312] [2020-09-25 09:06:28,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:28,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:06:28,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131043089] [2020-09-25 09:06:28,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:06:28,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:28,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:06:28,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:06:28,952 INFO L87 Difference]: Start difference. First operand 2280 states and 2798 transitions. Second operand 10 states. [2020-09-25 09:06:32,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:32,836 INFO L93 Difference]: Finished difference Result 5979 states and 7670 transitions. [2020-09-25 09:06:32,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:06:32,836 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 223 [2020-09-25 09:06:32,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:32,857 INFO L225 Difference]: With dead ends: 5979 [2020-09-25 09:06:32,857 INFO L226 Difference]: Without dead ends: 3845 [2020-09-25 09:06:32,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:06:32,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3845 states. [2020-09-25 09:06:32,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3845 to 3652. [2020-09-25 09:06:32,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3652 states. [2020-09-25 09:06:32,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 4436 transitions. [2020-09-25 09:06:32,979 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 4436 transitions. Word has length 223 [2020-09-25 09:06:32,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:32,980 INFO L479 AbstractCegarLoop]: Abstraction has 3652 states and 4436 transitions. [2020-09-25 09:06:32,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:06:32,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 4436 transitions. [2020-09-25 09:06:32,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 09:06:32,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:32,987 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:32,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:06:32,987 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:32,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:32,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1167088697, now seen corresponding path program 1 times [2020-09-25 09:06:32,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:32,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051128999] [2020-09-25 09:06:32,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:33,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:34,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:34,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:35,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:37,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:37,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:38,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-09-25 09:06:38,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:06:38,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 09:06:38,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:38,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:38,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:38,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 09:06:38,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 09:06:38,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:38,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:38,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:38,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:38,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:38,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:06:38,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:38,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:38,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:38,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:38,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:38,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:38,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:38,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:38,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:06:38,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:38,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 09:06:38,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:38,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:38,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:38,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:38,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 09:06:38,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:38,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:06:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:38,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:38,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 09:06:38,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:06:38,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-09-25 09:06:38,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:38,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:38,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:38,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:38,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 09:06:38,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:39,129 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 104 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:06:39,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051128999] [2020-09-25 09:06:39,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:39,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:06:39,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144486578] [2020-09-25 09:06:39,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:06:39,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:39,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:06:39,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:06:39,132 INFO L87 Difference]: Start difference. First operand 3652 states and 4436 transitions. Second operand 9 states. [2020-09-25 09:06:42,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:42,863 INFO L93 Difference]: Finished difference Result 9240 states and 11688 transitions. [2020-09-25 09:06:42,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 09:06:42,864 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 238 [2020-09-25 09:06:42,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:42,902 INFO L225 Difference]: With dead ends: 9240 [2020-09-25 09:06:42,902 INFO L226 Difference]: Without dead ends: 5753 [2020-09-25 09:06:42,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-25 09:06:42,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5753 states. [2020-09-25 09:06:43,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5753 to 4775. [2020-09-25 09:06:43,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4775 states. [2020-09-25 09:06:43,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4775 states to 4775 states and 5867 transitions. [2020-09-25 09:06:43,065 INFO L78 Accepts]: Start accepts. Automaton has 4775 states and 5867 transitions. Word has length 238 [2020-09-25 09:06:43,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:43,066 INFO L479 AbstractCegarLoop]: Abstraction has 4775 states and 5867 transitions. [2020-09-25 09:06:43,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:06:43,066 INFO L276 IsEmpty]: Start isEmpty. Operand 4775 states and 5867 transitions. [2020-09-25 09:06:43,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-09-25 09:06:43,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:43,083 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:43,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:06:43,083 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:43,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:43,084 INFO L82 PathProgramCache]: Analyzing trace with hash -772494115, now seen corresponding path program 1 times [2020-09-25 09:06:43,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:43,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980514690] [2020-09-25 09:06:43,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:43,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:43,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:43,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:43,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:44,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:44,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking...