/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:30:57,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:30:57,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:30:58,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:30:58,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:30:58,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:30:58,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:30:58,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:30:58,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:30:58,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:30:58,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:30:58,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:30:58,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:30:58,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:30:58,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:30:58,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:30:58,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:30:58,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:30:58,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:30:58,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:30:58,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:30:58,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:30:58,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:30:58,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:30:58,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:30:58,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:30:58,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:30:58,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:30:58,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:30:58,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:30:58,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:30:58,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:30:58,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:30:58,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:30:58,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:30:58,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:30:58,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:30:58,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:30:58,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:30:58,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:30:58,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:30:58,092 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 13:30:58,149 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:30:58,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:30:58,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:30:58,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:30:58,152 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:30:58,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:30:58,153 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:30:58,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:30:58,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:30:58,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:30:58,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:30:58,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:30:58,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:30:58,155 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:30:58,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:30:58,156 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:30:58,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:30:58,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:30:58,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:30:58,157 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:30:58,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:30:58,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:30:58,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:30:58,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:30:58,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:30:58,158 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:30:58,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:30:58,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:30:58,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:30:58,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:30:58,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:30:58,656 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:30:58,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:30:58,661 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:30:58,662 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:30:58,663 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label11.c [2020-09-25 13:30:58,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af3790ce9/9f2ce66dab644ece873e1cda488fe1c2/FLAG3997ef144 [2020-09-25 13:30:59,442 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:30:59,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label11.c [2020-09-25 13:30:59,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af3790ce9/9f2ce66dab644ece873e1cda488fe1c2/FLAG3997ef144 [2020-09-25 13:30:59,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af3790ce9/9f2ce66dab644ece873e1cda488fe1c2 [2020-09-25 13:30:59,703 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:30:59,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:30:59,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:59,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:30:59,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:30:59,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:59" (1/1) ... [2020-09-25 13:30:59,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32aa135d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:59, skipping insertion in model container [2020-09-25 13:30:59,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:59" (1/1) ... [2020-09-25 13:30:59,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:30:59,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:31:00,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:31:00,275 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:31:00,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:31:00,537 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:31:00,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:00 WrapperNode [2020-09-25 13:31:00,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:31:00,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:31:00,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:31:00,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:31:00,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:00" (1/1) ... [2020-09-25 13:31:00,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:00" (1/1) ... [2020-09-25 13:31:00,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:00" (1/1) ... [2020-09-25 13:31:00,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:00" (1/1) ... [2020-09-25 13:31:00,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:00" (1/1) ... [2020-09-25 13:31:00,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:00" (1/1) ... [2020-09-25 13:31:00,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:00" (1/1) ... [2020-09-25 13:31:00,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:31:00,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:31:00,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:31:00,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:31:00,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:00" (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 13:31:00,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:31:00,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:31:00,757 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:31:00,757 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:31:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:31:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:31:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:31:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:31:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:31:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:31:00,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:31:02,074 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:31:02,075 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:31:02,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:31:02 BoogieIcfgContainer [2020-09-25 13:31:02,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:31:02,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:31:02,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:31:02,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:31:02,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:30:59" (1/3) ... [2020-09-25 13:31:02,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e7d612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:31:02, skipping insertion in model container [2020-09-25 13:31:02,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:00" (2/3) ... [2020-09-25 13:31:02,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e7d612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:31:02, skipping insertion in model container [2020-09-25 13:31:02,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:31:02" (3/3) ... [2020-09-25 13:31:02,096 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label11.c [2020-09-25 13:31:02,108 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:31:02,119 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:31:02,139 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:31:02,175 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:31:02,175 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:31:02,175 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:31:02,175 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:31:02,175 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:31:02,176 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:31:02,176 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:31:02,176 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:31:02,208 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:31:02,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 13:31:02,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:02,233 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:31:02,233 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:02,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:02,242 INFO L82 PathProgramCache]: Analyzing trace with hash 604783425, now seen corresponding path program 1 times [2020-09-25 13:31:02,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:02,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416459496] [2020-09-25 13:31:02,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:02,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:02,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:03,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:03,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:03,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:04,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:05,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:06,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:07,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:07,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:07,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 13:31:07,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:31:07,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:31:07,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:07,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:07,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:31:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:31:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 13:31:07,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:31:07,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:07,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:07,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:07,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:07,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:07,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:31:07,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:07,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:07,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:07,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:07,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:31:07,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:07,823 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 13:31:07,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416459496] [2020-09-25 13:31:07,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:31:07,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:31:07,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877429219] [2020-09-25 13:31:07,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:31:07,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:07,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:31:07,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:31:07,862 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:31:10,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:10,205 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 13:31:10,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:31:10,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-09-25 13:31:10,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:10,236 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 13:31:10,236 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 13:31:10,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:10,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 13:31:10,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 13:31:10,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 13:31:10,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 13:31:10,352 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 134 [2020-09-25 13:31:10,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:10,353 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 13:31:10,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:31:10,353 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 13:31:10,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 13:31:10,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:10,368 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:31:10,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:31:10,369 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:10,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:10,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1174704491, now seen corresponding path program 1 times [2020-09-25 13:31:10,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:10,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834207215] [2020-09-25 13:31:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:10,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:10,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:10,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:11,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:12,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:12,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:12,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:14,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:14,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:15,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:15,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 13:31:15,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:31:15,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 13:31:15,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:15,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:15,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:15,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 13:31:15,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 13:31:15,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:15,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:15,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:15,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:15,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:15,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:15,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:31:15,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:15,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:15,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:15,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:15,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:15,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:15,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:15,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:15,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:31:15,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:15,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:31:15,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:15,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:15,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:31:15,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:15,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:31:15,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834207215] [2020-09-25 13:31:15,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:15,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:31:15,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727951081] [2020-09-25 13:31:15,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:31:15,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:15,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:31:15,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:15,696 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 5 states. [2020-09-25 13:31:17,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:17,926 INFO L93 Difference]: Finished difference Result 1648 states and 2113 transitions. [2020-09-25 13:31:17,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:31:17,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-25 13:31:17,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:17,939 INFO L225 Difference]: With dead ends: 1648 [2020-09-25 13:31:17,939 INFO L226 Difference]: Without dead ends: 1011 [2020-09-25 13:31:17,944 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 13:31:17,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-09-25 13:31:17,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 965. [2020-09-25 13:31:17,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2020-09-25 13:31:17,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1175 transitions. [2020-09-25 13:31:17,991 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1175 transitions. Word has length 152 [2020-09-25 13:31:17,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:17,992 INFO L479 AbstractCegarLoop]: Abstraction has 965 states and 1175 transitions. [2020-09-25 13:31:17,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:31:17,993 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1175 transitions. [2020-09-25 13:31:18,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 13:31:18,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:18,002 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:31:18,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:31:18,002 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:18,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:18,003 INFO L82 PathProgramCache]: Analyzing trace with hash -229206602, now seen corresponding path program 1 times [2020-09-25 13:31:18,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:18,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739644681] [2020-09-25 13:31:18,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:18,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:18,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:18,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:19,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:19,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:19,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:19,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:22,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:23,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:23,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 13:31:23,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:31:23,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:31:23,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:23,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:31:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 13:31:23,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:31:23,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:23,622 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-09-25 13:31:23,855 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2020-09-25 13:31:24,099 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 38 [2020-09-25 13:31:24,326 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 34 [2020-09-25 13:31:24,527 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 30 [2020-09-25 13:31:24,710 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 24 [2020-09-25 13:31:24,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:24,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:24,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:24,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:24,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:24,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:31:24,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:24,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:24,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:24,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:24,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:24,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:24,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:24,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:24,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:24,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:31:24,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:24,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 13:31:24,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:24,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:24,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:31:24,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:24,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:31:24,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:25,129 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:31:25,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739644681] [2020-09-25 13:31:25,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:25,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:31:25,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640714290] [2020-09-25 13:31:25,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:31:25,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:25,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:31:25,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:31:25,132 INFO L87 Difference]: Start difference. First operand 965 states and 1175 transitions. Second operand 13 states. [2020-09-25 13:31:25,712 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-09-25 13:31:25,907 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-09-25 13:31:26,427 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2020-09-25 13:31:26,936 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2020-09-25 13:31:27,525 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-09-25 13:31:28,217 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-09-25 13:31:28,425 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-09-25 13:31:28,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:28,961 INFO L93 Difference]: Finished difference Result 1996 states and 2510 transitions. [2020-09-25 13:31:28,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:31:28,962 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 153 [2020-09-25 13:31:28,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:28,978 INFO L225 Difference]: With dead ends: 1996 [2020-09-25 13:31:28,978 INFO L226 Difference]: Without dead ends: 1053 [2020-09-25 13:31:28,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:31:28,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2020-09-25 13:31:29,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1024. [2020-09-25 13:31:29,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-09-25 13:31:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1242 transitions. [2020-09-25 13:31:29,041 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1242 transitions. Word has length 153 [2020-09-25 13:31:29,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:29,042 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1242 transitions. [2020-09-25 13:31:29,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:31:29,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1242 transitions. [2020-09-25 13:31:29,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 13:31:29,049 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:29,050 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:31:29,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:31:29,051 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:29,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:29,051 INFO L82 PathProgramCache]: Analyzing trace with hash -652427357, now seen corresponding path program 1 times [2020-09-25 13:31:29,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:29,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988308094] [2020-09-25 13:31:29,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:29,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:29,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:29,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:29,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:29,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:30,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:30,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:31,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:32,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:32,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:33,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:34,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:34,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 13:31:34,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:31:34,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:31:34,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:34,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:34,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 13:31:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 13:31:34,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:34,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:34,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:34,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:34,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:34,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:34,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:31:34,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:34,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:34,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:34,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:34,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:34,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:34,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:34,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:34,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:34,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:31:34,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:34,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:31:34,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:34,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:31:34,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:34,324 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:31:34,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988308094] [2020-09-25 13:31:34,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:34,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:31:34,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717410897] [2020-09-25 13:31:34,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:31:34,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:34,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:31:34,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:34,327 INFO L87 Difference]: Start difference. First operand 1024 states and 1242 transitions. Second operand 5 states. [2020-09-25 13:31:36,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:36,340 INFO L93 Difference]: Finished difference Result 2378 states and 3005 transitions. [2020-09-25 13:31:36,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:31:36,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 13:31:36,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:36,352 INFO L225 Difference]: With dead ends: 2378 [2020-09-25 13:31:36,352 INFO L226 Difference]: Without dead ends: 1376 [2020-09-25 13:31:36,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:31:36,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-09-25 13:31:36,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1329. [2020-09-25 13:31:36,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1329 states. [2020-09-25 13:31:36,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1585 transitions. [2020-09-25 13:31:36,412 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1585 transitions. Word has length 156 [2020-09-25 13:31:36,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:36,413 INFO L479 AbstractCegarLoop]: Abstraction has 1329 states and 1585 transitions. [2020-09-25 13:31:36,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:31:36,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1585 transitions. [2020-09-25 13:31:36,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 13:31:36,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:36,420 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:31:36,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:31:36,420 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:36,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:36,421 INFO L82 PathProgramCache]: Analyzing trace with hash 588117358, now seen corresponding path program 1 times [2020-09-25 13:31:36,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:36,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020583826] [2020-09-25 13:31:36,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:36,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:36,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:36,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:38,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:38,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:39,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:39,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:41,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:41,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 13:31:41,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:31:41,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:31:41,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:41,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:41,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:31:41,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:31:41,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 13:31:41,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:41,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:41,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:41,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:41,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:41,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:41,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 13:31:41,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:41,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:41,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:31:41,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:41,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:31:41,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:41,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:41,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:41,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:41,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:42,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:42,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:42,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:31:42,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 13:31:42,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:42,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:42,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:42,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:31:42,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:31:42,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:31:42,277 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:31:42,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020583826] [2020-09-25 13:31:42,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:42,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:31:42,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043272644] [2020-09-25 13:31:42,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:31:42,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:42,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:31:42,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:31:42,280 INFO L87 Difference]: Start difference. First operand 1329 states and 1585 transitions. Second operand 12 states.