/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:22:58,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:22:58,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:22:58,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:22:58,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:22:58,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:22:58,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:22:58,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:22:58,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:22:58,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:22:58,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:22:58,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:22:58,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:22:58,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:22:58,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:22:58,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:22:58,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:22:58,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:22:58,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:22:58,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:22:58,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:22:58,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:22:58,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:22:58,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:22:58,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:22:58,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:22:58,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:22:58,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:22:58,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:22:58,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:22:58,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:22:58,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:22:58,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:22:58,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:22:58,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:22:58,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:22:58,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:22:58,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:22:58,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:22:58,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:22:58,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:22:58,733 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 [2020-09-24 18:22:58,760 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:22:58,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:22:58,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:22:58,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:22:58,762 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:22:58,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:22:58,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:22:58,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:22:58,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:22:58,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:22:58,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:22:58,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:22:58,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:22:58,764 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:22:58,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:22:58,764 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:22:58,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:22:58,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:22:58,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:22:58,765 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:22:58,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:22:58,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:22:58,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:22:58,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:22:58,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:22:58,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:22:58,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:22:58,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:22:58,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:22:58,767 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:22:59,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:22:59,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:22:59,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:22:59,237 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:22:59,237 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:22:59,238 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-09-24 18:22:59,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7bcb0ff27/db65da22de454920b90208b79d75fea1/FLAGb1eb2fa98 [2020-09-24 18:22:59,985 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:22:59,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-09-24 18:22:59,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7bcb0ff27/db65da22de454920b90208b79d75fea1/FLAGb1eb2fa98 [2020-09-24 18:23:00,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7bcb0ff27/db65da22de454920b90208b79d75fea1 [2020-09-24 18:23:00,219 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:23:00,226 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:23:00,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:00,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:23:00,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:23:00,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:00" (1/1) ... [2020-09-24 18:23:00,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:00, skipping insertion in model container [2020-09-24 18:23:00,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:00" (1/1) ... [2020-09-24 18:23:00,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:23:00,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:23:00,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:00,823 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:23:01,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:01,043 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:23:01,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:01 WrapperNode [2020-09-24 18:23:01,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:01,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:23:01,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:23:01,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:23:01,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:01" (1/1) ... [2020-09-24 18:23:01,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:01" (1/1) ... [2020-09-24 18:23:01,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:01" (1/1) ... [2020-09-24 18:23:01,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:01" (1/1) ... [2020-09-24 18:23:01,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:01" (1/1) ... [2020-09-24 18:23:01,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:01" (1/1) ... [2020-09-24 18:23:01,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:01" (1/1) ... [2020-09-24 18:23:01,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:23:01,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:23:01,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:23:01,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:23:01,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:01" (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 [2020-09-24 18:23:01,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:23:01,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:23:01,273 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:23:01,273 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:23:01,274 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:23:01,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:23:01,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:23:01,275 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:23:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:23:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:23:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:23:03,035 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:23:03,035 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:23:03,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:03 BoogieIcfgContainer [2020-09-24 18:23:03,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:23:03,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:23:03,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:23:03,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:23:03,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:23:00" (1/3) ... [2020-09-24 18:23:03,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:03, skipping insertion in model container [2020-09-24 18:23:03,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:01" (2/3) ... [2020-09-24 18:23:03,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:03, skipping insertion in model container [2020-09-24 18:23:03,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:03" (3/3) ... [2020-09-24 18:23:03,054 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label42.c [2020-09-24 18:23:03,065 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:23:03,076 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:23:03,099 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:23:03,134 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:23:03,134 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:23:03,134 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:23:03,135 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:23:03,135 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:23:03,135 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:23:03,135 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:23:03,135 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:23:03,166 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:23:03,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-24 18:23:03,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:03,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:03,188 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:03,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:03,195 INFO L82 PathProgramCache]: Analyzing trace with hash -551630175, now seen corresponding path program 1 times [2020-09-24 18:23:03,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:03,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840094341] [2020-09-24 18:23:03,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:03,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:03,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:04,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:04,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:06,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:06,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:08,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:08,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:08,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:08,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-24 18:23:08,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:23:08,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-09-24 18:23:08,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:08,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:08,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:23:08,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-24 18:23:08,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:23:08,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:08,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:08,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:08,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:08,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:08,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:23:08,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:08,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:08,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:08,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:23:08,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:08,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840094341] [2020-09-24 18:23:08,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:08,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:23:08,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917063577] [2020-09-24 18:23:08,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:08,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:08,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:08,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:08,949 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-24 18:23:12,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:12,502 INFO L93 Difference]: Finished difference Result 1430 states and 2024 transitions. [2020-09-24 18:23:12,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:23:12,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-09-24 18:23:12,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:12,531 INFO L225 Difference]: With dead ends: 1430 [2020-09-24 18:23:12,531 INFO L226 Difference]: Without dead ends: 847 [2020-09-24 18:23:12,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:12,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-09-24 18:23:12,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 775. [2020-09-24 18:23:12,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-09-24 18:23:12,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 947 transitions. [2020-09-24 18:23:12,673 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 947 transitions. Word has length 126 [2020-09-24 18:23:12,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:12,674 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 947 transitions. [2020-09-24 18:23:12,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:12,674 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 947 transitions. [2020-09-24 18:23:12,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 18:23:12,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:12,684 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:23:12,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:23:12,685 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:12,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:12,685 INFO L82 PathProgramCache]: Analyzing trace with hash 830786714, now seen corresponding path program 1 times [2020-09-24 18:23:12,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:12,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031272550] [2020-09-24 18:23:12,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:12,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:12,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:12,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:14,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:14,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:14,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:15,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:17,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:17,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-24 18:23:17,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:23:17,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-24 18:23:17,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:17,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:17,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:23:17,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 18:23:17,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:17,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:17,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:17,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:17,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:17,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:17,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:23:17,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:17,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:17,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:17,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:17,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:17,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:17,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:23:17,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:17,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:23:17,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:17,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:17,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:17,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:23:17,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:18,027 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:18,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031272550] [2020-09-24 18:23:18,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:18,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:18,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953591725] [2020-09-24 18:23:18,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:18,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:18,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:18,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:18,031 INFO L87 Difference]: Start difference. First operand 775 states and 947 transitions. Second operand 5 states. [2020-09-24 18:23:20,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:20,263 INFO L93 Difference]: Finished difference Result 1844 states and 2357 transitions. [2020-09-24 18:23:20,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:20,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-24 18:23:20,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:20,275 INFO L225 Difference]: With dead ends: 1844 [2020-09-24 18:23:20,275 INFO L226 Difference]: Without dead ends: 1091 [2020-09-24 18:23:20,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:20,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2020-09-24 18:23:20,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1079. [2020-09-24 18:23:20,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2020-09-24 18:23:20,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1314 transitions. [2020-09-24 18:23:20,320 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1314 transitions. Word has length 143 [2020-09-24 18:23:20,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:20,321 INFO L479 AbstractCegarLoop]: Abstraction has 1079 states and 1314 transitions. [2020-09-24 18:23:20,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:20,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1314 transitions. [2020-09-24 18:23:20,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-24 18:23:20,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:20,328 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:23:20,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:23:20,329 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:20,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:20,329 INFO L82 PathProgramCache]: Analyzing trace with hash 678126162, now seen corresponding path program 1 times [2020-09-24 18:23:20,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:20,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221707435] [2020-09-24 18:23:20,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:20,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:20,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:20,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:21,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:22,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:22,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:23,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:25,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:25,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-24 18:23:25,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:23:25,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 18:23:25,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 18:23:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-24 18:23:25,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:25,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:25,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:25,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:25,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:25,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:25,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:23:25,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:25,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:25,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:25,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:25,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:25,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:25,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:25,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:25,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 18:23:25,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:25,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:25,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:25,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:23:25,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:25,686 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:25,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221707435] [2020-09-24 18:23:25,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:25,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:25,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973028077] [2020-09-24 18:23:25,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:25,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:25,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:25,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:25,690 INFO L87 Difference]: Start difference. First operand 1079 states and 1314 transitions. Second operand 5 states. [2020-09-24 18:23:27,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:27,539 INFO L93 Difference]: Finished difference Result 2903 states and 3663 transitions. [2020-09-24 18:23:27,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:27,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-09-24 18:23:27,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:27,551 INFO L225 Difference]: With dead ends: 2903 [2020-09-24 18:23:27,551 INFO L226 Difference]: Without dead ends: 1846 [2020-09-24 18:23:27,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:27,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2020-09-24 18:23:27,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1534. [2020-09-24 18:23:27,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1534 states. [2020-09-24 18:23:27,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 1925 transitions. [2020-09-24 18:23:27,616 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 1925 transitions. Word has length 155 [2020-09-24 18:23:27,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:27,617 INFO L479 AbstractCegarLoop]: Abstraction has 1534 states and 1925 transitions. [2020-09-24 18:23:27,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:27,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 1925 transitions. [2020-09-24 18:23:27,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-24 18:23:27,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:27,627 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 18:23:27,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:23:27,628 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:27,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:27,629 INFO L82 PathProgramCache]: Analyzing trace with hash 965408614, now seen corresponding path program 1 times [2020-09-24 18:23:27,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:27,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115696007] [2020-09-24 18:23:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:27,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:27,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:28,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:28,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:28,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:29,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:29,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:31,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:31,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:32,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 18:23:32,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:23:32,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 18:23:32,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 18:23:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:23:32,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:32,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:32,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:32,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:32,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:32,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:23:32,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:32,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:32,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:32,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:32,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:32,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:32,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:32,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:32,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:32,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 18:23:32,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:32,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:32,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:32,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:23:32,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:32,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:23:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:32,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:32,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:23:32,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:32,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 18:23:32,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:32,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:32,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:23:32,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:23:32,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115696007] [2020-09-24 18:23:32,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:32,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:23:32,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775053324] [2020-09-24 18:23:32,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:32,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:32,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:32,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:32,989 INFO L87 Difference]: Start difference. First operand 1534 states and 1925 transitions. Second operand 7 states. [2020-09-24 18:23:36,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:36,504 INFO L93 Difference]: Finished difference Result 5679 states and 7817 transitions. [2020-09-24 18:23:36,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:23:36,504 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2020-09-24 18:23:36,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:36,534 INFO L225 Difference]: With dead ends: 5679 [2020-09-24 18:23:36,534 INFO L226 Difference]: Without dead ends: 4167 [2020-09-24 18:23:36,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:23:36,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2020-09-24 18:23:36,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 3627. [2020-09-24 18:23:36,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3627 states. [2020-09-24 18:23:36,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 4641 transitions. [2020-09-24 18:23:36,713 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 4641 transitions. Word has length 173 [2020-09-24 18:23:36,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:36,713 INFO L479 AbstractCegarLoop]: Abstraction has 3627 states and 4641 transitions. [2020-09-24 18:23:36,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:23:36,714 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 4641 transitions. [2020-09-24 18:23:36,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-24 18:23:36,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:36,732 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:36,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:23:36,733 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:36,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:36,734 INFO L82 PathProgramCache]: Analyzing trace with hash -627085309, now seen corresponding path program 1 times [2020-09-24 18:23:36,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:36,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764985095] [2020-09-24 18:23:36,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:36,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:36,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:41,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-24 18:23:41,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:23:41,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 18:23:41,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:41,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:41,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-24 18:23:41,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 18:23:41,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:41,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:41,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:41,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:41,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:41,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:23:41,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:41,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:41,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:41,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:41,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:41,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:41,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:41,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:23:41,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:42,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:23:42,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:42,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:42,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:23:42,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 18:23:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:42,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:42,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:42,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:23:42,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:42,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:23:42,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:42,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:42,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:42,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:23:42,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 18:23:42,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764985095] [2020-09-24 18:23:42,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:42,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:42,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291503085] [2020-09-24 18:23:42,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:42,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:42,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:42,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:42,095 INFO L87 Difference]: Start difference. First operand 3627 states and 4641 transitions. Second operand 5 states. [2020-09-24 18:23:44,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:44,319 INFO L93 Difference]: Finished difference Result 8473 states and 11224 transitions. [2020-09-24 18:23:44,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:44,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-09-24 18:23:44,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:44,347 INFO L225 Difference]: With dead ends: 8473 [2020-09-24 18:23:44,347 INFO L226 Difference]: Without dead ends: 4878 [2020-09-24 18:23:44,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:44,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4878 states. [2020-09-24 18:23:44,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4878 to 4535. [2020-09-24 18:23:44,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4535 states. [2020-09-24 18:23:44,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4535 states to 4535 states and 5689 transitions. [2020-09-24 18:23:44,526 INFO L78 Accepts]: Start accepts. Automaton has 4535 states and 5689 transitions. Word has length 187 [2020-09-24 18:23:44,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:44,527 INFO L479 AbstractCegarLoop]: Abstraction has 4535 states and 5689 transitions. [2020-09-24 18:23:44,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:44,527 INFO L276 IsEmpty]: Start isEmpty. Operand 4535 states and 5689 transitions. [2020-09-24 18:23:44,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-24 18:23:44,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:44,549 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:44,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:23:44,550 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:44,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:44,550 INFO L82 PathProgramCache]: Analyzing trace with hash -67207104, now seen corresponding path program 1 times [2020-09-24 18:23:44,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:44,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216923940] [2020-09-24 18:23:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:44,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:44,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:45,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:45,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:45,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:46,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:46,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking...