/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:30:35,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:30:35,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:30:35,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:30:35,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:30:35,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:30:35,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:30:35,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:30:35,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:30:35,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:30:35,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:30:35,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:30:35,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:30:35,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:30:35,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:30:35,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:30:35,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:30:35,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:30:35,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:30:35,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:30:35,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:30:35,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:30:35,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:30:35,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:30:35,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:30:35,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:30:35,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:30:35,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:30:35,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:30:35,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:30:35,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:30:35,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:30:35,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:30:35,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:30:35,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:30:35,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:30:35,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:30:35,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:30:35,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:30:35,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:30:35,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:30:35,633 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:30:35,681 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:30:35,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:30:35,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:30:35,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:30:35,685 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:30:35,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:30:35,685 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:30:35,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:30:35,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:30:35,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:30:35,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:30:35,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:30:35,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:30:35,688 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:30:35,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:30:35,688 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:30:35,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:30:35,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:30:35,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:30:35,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:30:35,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:30:35,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:30:35,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:30:35,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:30:35,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:30:35,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:30:35,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:30:35,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:30:35,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:30:35,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:30:36,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:30:36,160 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:30:36,169 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:30:36,172 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:30:36,172 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:30:36,173 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-25 04:30:36,269 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b8ad1831/74d15d37576a4eb786ad49480b877008/FLAGe441389d8 [2020-09-25 04:30:36,920 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:30:36,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-25 04:30:36,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b8ad1831/74d15d37576a4eb786ad49480b877008/FLAGe441389d8 [2020-09-25 04:30:37,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b8ad1831/74d15d37576a4eb786ad49480b877008 [2020-09-25 04:30:37,207 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:30:37,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:30:37,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:30:37,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:30:37,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:30:37,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:30:37" (1/1) ... [2020-09-25 04:30:37,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5035f6b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:37, skipping insertion in model container [2020-09-25 04:30:37,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:30:37" (1/1) ... [2020-09-25 04:30:37,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:30:37,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:30:37,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:30:37,923 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:30:38,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:30:38,037 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:30:38,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:38 WrapperNode [2020-09-25 04:30:38,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:30:38,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:30:38,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:30:38,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:30:38,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:38" (1/1) ... [2020-09-25 04:30:38,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:38" (1/1) ... [2020-09-25 04:30:38,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:38" (1/1) ... [2020-09-25 04:30:38,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:38" (1/1) ... [2020-09-25 04:30:38,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:38" (1/1) ... [2020-09-25 04:30:38,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:38" (1/1) ... [2020-09-25 04:30:38,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:38" (1/1) ... [2020-09-25 04:30:38,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:30:38,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:30:38,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:30:38,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:30:38,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:30:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:30:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:30:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:30:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:30:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:30:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:30:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:30:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:30:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:30:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:30:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:30:39,685 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:30:39,685 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:30:39,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:39 BoogieIcfgContainer [2020-09-25 04:30:39,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:30:39,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:30:39,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:30:39,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:30:39,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:30:37" (1/3) ... [2020-09-25 04:30:39,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0e8525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:39, skipping insertion in model container [2020-09-25 04:30:39,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:38" (2/3) ... [2020-09-25 04:30:39,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0e8525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:39, skipping insertion in model container [2020-09-25 04:30:39,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:39" (3/3) ... [2020-09-25 04:30:39,704 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label39.c [2020-09-25 04:30:39,716 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:30:39,727 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:30:39,750 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:30:39,784 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:30:39,784 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:30:39,784 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:30:39,784 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:30:39,784 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:30:39,785 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:30:39,785 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:30:39,785 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:30:39,816 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:30:39,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 04:30:39,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:39,828 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] [2020-09-25 04:30:39,828 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:39,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:39,836 INFO L82 PathProgramCache]: Analyzing trace with hash 381272735, now seen corresponding path program 1 times [2020-09-25 04:30:39,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:39,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165952990] [2020-09-25 04:30:39,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:40,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:40,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:40,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:40,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:30:40,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:30:40,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 809 [2020-09-25 04:30:40,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:40,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:40,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:30:40,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:30:40,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:30:40,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:30:40,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:40,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:41,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:41,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:41,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:30:41,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:41,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:41,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:41,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:41,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:30:41,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 04:30:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:41,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165952990] [2020-09-25 04:30:41,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:30:41,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:30:41,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688889577] [2020-09-25 04:30:41,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:30:41,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:41,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:30:41,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:30:41,099 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:30:43,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:43,135 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 04:30:43,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:30:43,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-09-25 04:30:43,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:43,164 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 04:30:43,164 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 04:30:43,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:43,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 04:30:43,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 04:30:43,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 04:30:43,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 04:30:43,273 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 45 [2020-09-25 04:30:43,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:43,274 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 04:30:43,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:30:43,274 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 04:30:43,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 04:30:43,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:43,281 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:43,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:30:43,282 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:43,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:43,283 INFO L82 PathProgramCache]: Analyzing trace with hash 2073113520, now seen corresponding path program 1 times [2020-09-25 04:30:43,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:43,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530059368] [2020-09-25 04:30:43,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:43,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:43,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:43,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:43,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:43,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:47,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:47,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 04:30:47,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:30:47,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4039 [2020-09-25 04:30:47,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:47,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:47,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:47,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:30:47,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 04:30:47,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:47,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:47,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:47,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:47,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:47,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:47,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:30:47,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:47,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:47,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:47,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:47,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:47,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:47,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:47,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:47,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:47,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:30:47,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:47,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 04:30:47,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:47,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:47,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:47,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:47,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:30:47,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:47,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530059368] [2020-09-25 04:30:47,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:47,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:47,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177414076] [2020-09-25 04:30:47,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:47,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:47,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:47,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:47,665 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 04:30:49,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:49,404 INFO L93 Difference]: Finished difference Result 698 states and 888 transitions. [2020-09-25 04:30:49,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:49,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-09-25 04:30:49,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:49,412 INFO L225 Difference]: With dead ends: 698 [2020-09-25 04:30:49,412 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 04:30:49,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:49,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 04:30:49,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2020-09-25 04:30:49,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-25 04:30:49,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 886 transitions. [2020-09-25 04:30:49,476 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 886 transitions. Word has length 124 [2020-09-25 04:30:49,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:49,480 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 886 transitions. [2020-09-25 04:30:49,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:49,480 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 886 transitions. [2020-09-25 04:30:49,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 04:30:49,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:49,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:49,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:30:49,491 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:49,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:49,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1595126062, now seen corresponding path program 1 times [2020-09-25 04:30:49,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:49,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862580021] [2020-09-25 04:30:49,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:49,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:49,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:49,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:49,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:51,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:51,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:52,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:54,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:54,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 04:30:54,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:30:54,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4474 [2020-09-25 04:30:54,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:54,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:54,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:54,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 04:30:54,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 04:30:54,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:54,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:54,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:54,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:54,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:54,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:30:54,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:54,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:54,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:54,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:54,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:54,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:54,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:54,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:30:54,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:54,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 04:30:54,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:54,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:54,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:54,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:54,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:30:54,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:54,265 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:54,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862580021] [2020-09-25 04:30:54,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:54,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:54,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654673525] [2020-09-25 04:30:54,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:54,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:54,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:54,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:54,268 INFO L87 Difference]: Start difference. First operand 696 states and 886 transitions. Second operand 5 states. [2020-09-25 04:30:56,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:56,293 INFO L93 Difference]: Finished difference Result 1700 states and 2254 transitions. [2020-09-25 04:30:56,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:56,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 04:30:56,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:56,302 INFO L225 Difference]: With dead ends: 1700 [2020-09-25 04:30:56,302 INFO L226 Difference]: Without dead ends: 1170 [2020-09-25 04:30:56,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:56,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2020-09-25 04:30:56,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1150. [2020-09-25 04:30:56,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1150 states. [2020-09-25 04:30:56,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1437 transitions. [2020-09-25 04:30:56,347 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1437 transitions. Word has length 134 [2020-09-25 04:30:56,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:56,348 INFO L479 AbstractCegarLoop]: Abstraction has 1150 states and 1437 transitions. [2020-09-25 04:30:56,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:56,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1437 transitions. [2020-09-25 04:30:56,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 04:30:56,352 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:56,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:56,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:30:56,353 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:56,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:56,354 INFO L82 PathProgramCache]: Analyzing trace with hash 375162654, now seen corresponding path program 1 times [2020-09-25 04:30:56,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:56,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598717265] [2020-09-25 04:30:56,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:56,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:56,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:56,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:56,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:57,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:58,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:01,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:01,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 04:31:01,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:01,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4908 [2020-09-25 04:31:01,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:01,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:01,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:01,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-09-25 04:31:01,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 04:31:01,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:01,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:01,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:01,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:01,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:01,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:01,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:31:01,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:01,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:01,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:01,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:01,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:01,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:01,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:01,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:01,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:01,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 04:31:01,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:01,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 04:31:01,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:01,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:01,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:01,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:01,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 04:31:01,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:01,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598717265] [2020-09-25 04:31:01,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:01,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:01,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989050934] [2020-09-25 04:31:01,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:01,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:01,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:01,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:01,671 INFO L87 Difference]: Start difference. First operand 1150 states and 1437 transitions. Second operand 5 states. [2020-09-25 04:31:03,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:03,845 INFO L93 Difference]: Finished difference Result 2663 states and 3467 transitions. [2020-09-25 04:31:03,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:03,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-25 04:31:03,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:03,856 INFO L225 Difference]: With dead ends: 2663 [2020-09-25 04:31:03,856 INFO L226 Difference]: Without dead ends: 1829 [2020-09-25 04:31:03,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:03,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2020-09-25 04:31:03,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1794. [2020-09-25 04:31:03,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1794 states. [2020-09-25 04:31:03,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2298 transitions. [2020-09-25 04:31:03,921 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2298 transitions. Word has length 153 [2020-09-25 04:31:03,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:03,924 INFO L479 AbstractCegarLoop]: Abstraction has 1794 states and 2298 transitions. [2020-09-25 04:31:03,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:03,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2298 transitions. [2020-09-25 04:31:03,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 04:31:03,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:03,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:31:03,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:31:03,930 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:03,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:03,931 INFO L82 PathProgramCache]: Analyzing trace with hash 961850231, now seen corresponding path program 1 times [2020-09-25 04:31:03,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:03,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326919386] [2020-09-25 04:31:03,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:04,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:04,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:04,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:05,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:05,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:08,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:08,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 04:31:08,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:31:08,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 04:31:08,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:08,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:08,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:31:08,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:31:08,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 04:31:08,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:09,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:09,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:09,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:09,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:09,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:09,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:31:09,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:09,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:09,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:09,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:09,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:31:09,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:31:09,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:09,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:09,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:09,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 04:31:09,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:09,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-25 04:31:09,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:09,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 04:31:09,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:09,567 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:09,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326919386] [2020-09-25 04:31:09,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:31:09,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:31:09,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737482324] [2020-09-25 04:31:09,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:09,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:09,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:09,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:09,573 INFO L87 Difference]: Start difference. First operand 1794 states and 2298 transitions. Second operand 7 states. [2020-09-25 04:31:11,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:11,905 INFO L93 Difference]: Finished difference Result 3998 states and 5619 transitions. [2020-09-25 04:31:11,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:31:11,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 04:31:11,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:11,930 INFO L225 Difference]: With dead ends: 3998 [2020-09-25 04:31:11,930 INFO L226 Difference]: Without dead ends: 2369 [2020-09-25 04:31:11,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:31:11,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2020-09-25 04:31:12,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 1819. [2020-09-25 04:31:12,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1819 states. [2020-09-25 04:31:12,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 2355 transitions. [2020-09-25 04:31:12,036 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 2355 transitions. Word has length 181 [2020-09-25 04:31:12,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:12,037 INFO L479 AbstractCegarLoop]: Abstraction has 1819 states and 2355 transitions. [2020-09-25 04:31:12,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:31:12,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 2355 transitions. [2020-09-25 04:31:12,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 04:31:12,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:12,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:31:12,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:31:12,042 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:12,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:12,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1117469357, now seen corresponding path program 1 times [2020-09-25 04:31:12,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:12,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841558835] [2020-09-25 04:31:12,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:12,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:12,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:12,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:13,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:14,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:17,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:17,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 04:31:17,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:17,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 04:31:17,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:17,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:17,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-25 04:31:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 04:31:17,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:31:17,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:17,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:17,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:17,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:17,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:17,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:31:17,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:17,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:17,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:17,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:17,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:17,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:17,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:17,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:17,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:17,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 04:31:17,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:17,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 04:31:17,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:17,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:17,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:17,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:17,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 04:31:17,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:17,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841558835] [2020-09-25 04:31:17,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:17,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:31:17,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304985246] [2020-09-25 04:31:17,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:31:17,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:17,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:31:17,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:17,529 INFO L87 Difference]: Start difference. First operand 1819 states and 2355 transitions. Second operand 6 states. [2020-09-25 04:31:20,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:20,102 INFO L93 Difference]: Finished difference Result 4103 states and 5484 transitions. [2020-09-25 04:31:20,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:31:20,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 191 [2020-09-25 04:31:20,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:20,115 INFO L225 Difference]: With dead ends: 4103 [2020-09-25 04:31:20,116 INFO L226 Difference]: Without dead ends: 2449 [2020-09-25 04:31:20,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:31:20,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2449 states. [2020-09-25 04:31:20,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2449 to 2275. [2020-09-25 04:31:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2275 states. [2020-09-25 04:31:20,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 2924 transitions. [2020-09-25 04:31:20,183 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 2924 transitions. Word has length 191 [2020-09-25 04:31:20,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:20,183 INFO L479 AbstractCegarLoop]: Abstraction has 2275 states and 2924 transitions. [2020-09-25 04:31:20,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:31:20,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 2924 transitions. [2020-09-25 04:31:20,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-09-25 04:31:20,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:20,192 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:31:20,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:31:20,193 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:20,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:20,193 INFO L82 PathProgramCache]: Analyzing trace with hash 364340204, now seen corresponding path program 1 times [2020-09-25 04:31:20,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:20,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565021030] [2020-09-25 04:31:20,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:20,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:21,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:21,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking...