/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:15:16,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:15:16,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:15:17,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:15:17,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:15:17,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:15:17,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:15:17,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:15:17,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:15:17,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:15:17,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:15:17,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:15:17,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:15:17,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:15:17,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:15:17,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:15:17,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:15:17,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:15:17,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:15:17,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:15:17,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:15:17,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:15:17,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:15:17,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:15:17,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:15:17,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:15:17,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:15:17,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:15:17,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:15:17,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:15:17,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:15:17,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:15:17,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:15:17,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:15:17,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:15:17,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:15:17,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:15:17,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:15:17,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:15:17,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:15:17,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:15:17,073 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:15:17,122 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:15:17,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:15:17,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:15:17,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:15:17,125 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:15:17,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:15:17,125 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:15:17,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:15:17,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:15:17,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:15:17,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:15:17,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:15:17,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:15:17,128 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:15:17,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:15:17,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:15:17,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:15:17,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:15:17,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:15:17,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:15:17,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:15:17,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:15:17,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:15:17,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:15:17,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:15:17,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:15:17,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:15:17,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:15:17,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:15:17,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:15:17,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:15:17,579 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:15:17,583 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:15:17,585 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:15:17,585 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:15:17,586 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label04.c [2020-09-25 11:15:17,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/173a1ed98/c97de82f9f674c089a30b1340b1ffd07/FLAG5e5886edb [2020-09-25 11:15:18,334 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:15:18,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label04.c [2020-09-25 11:15:18,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/173a1ed98/c97de82f9f674c089a30b1340b1ffd07/FLAG5e5886edb [2020-09-25 11:15:18,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/173a1ed98/c97de82f9f674c089a30b1340b1ffd07 [2020-09-25 11:15:18,596 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:15:18,602 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:15:18,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:15:18,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:15:18,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:15:18,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:15:18" (1/1) ... [2020-09-25 11:15:18,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dbe4ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:18, skipping insertion in model container [2020-09-25 11:15:18,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:15:18" (1/1) ... [2020-09-25 11:15:18,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:15:18,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:15:19,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:15:19,282 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:15:19,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:15:19,393 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:15:19,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:19 WrapperNode [2020-09-25 11:15:19,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:15:19,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:15:19,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:15:19,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:15:19,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:19" (1/1) ... [2020-09-25 11:15:19,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:19" (1/1) ... [2020-09-25 11:15:19,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:19" (1/1) ... [2020-09-25 11:15:19,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:19" (1/1) ... [2020-09-25 11:15:19,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:19" (1/1) ... [2020-09-25 11:15:19,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:19" (1/1) ... [2020-09-25 11:15:19,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:19" (1/1) ... [2020-09-25 11:15:19,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:15:19,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:15:19,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:15:19,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:15:19,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:15:19,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:15:19,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:15:19,600 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:15:19,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:15:19,601 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:15:19,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:15:19,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:15:19,601 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:15:19,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:15:19,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:15:19,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:15:21,073 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:15:21,074 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:15:21,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:15:21 BoogieIcfgContainer [2020-09-25 11:15:21,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:15:21,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:15:21,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:15:21,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:15:21,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:15:18" (1/3) ... [2020-09-25 11:15:21,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346ad23b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:15:21, skipping insertion in model container [2020-09-25 11:15:21,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:19" (2/3) ... [2020-09-25 11:15:21,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346ad23b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:15:21, skipping insertion in model container [2020-09-25 11:15:21,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:15:21" (3/3) ... [2020-09-25 11:15:21,095 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label04.c [2020-09-25 11:15:21,107 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:15:21,118 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:15:21,141 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:15:21,175 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:15:21,175 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:15:21,175 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:15:21,176 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:15:21,176 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:15:21,176 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:15:21,176 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:15:21,176 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:15:21,207 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:15:21,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 11:15:21,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:21,228 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] [2020-09-25 11:15:21,229 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:21,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:21,235 INFO L82 PathProgramCache]: Analyzing trace with hash -361381607, now seen corresponding path program 1 times [2020-09-25 11:15:21,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:21,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782974296] [2020-09-25 11:15:21,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:21,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:21,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:22,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:24,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:24,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:24,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:25,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:26,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:26,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:26,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:26,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 11:15:26,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:15:26,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 11:15:26,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:26,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:26,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:15:26,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:15:26,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 11:15:26,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:15:26,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:26,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:26,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:26,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:26,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:26,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:15:26,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:26,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:26,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:26,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:26,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:15:26,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:26,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:15:26,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782974296] [2020-09-25 11:15:26,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:15:26,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:15:26,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132989117] [2020-09-25 11:15:26,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:15:26,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:26,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:15:26,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:15:26,865 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:15:29,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:29,026 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 11:15:29,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:15:29,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-09-25 11:15:29,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:29,068 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 11:15:29,068 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 11:15:29,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:15:29,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 11:15:29,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 11:15:29,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 11:15:29,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 11:15:29,188 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 132 [2020-09-25 11:15:29,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:29,190 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 11:15:29,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:15:29,190 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 11:15:29,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 11:15:29,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:29,206 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:15:29,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:15:29,207 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:29,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:29,207 INFO L82 PathProgramCache]: Analyzing trace with hash 799045204, now seen corresponding path program 1 times [2020-09-25 11:15:29,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:29,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814283918] [2020-09-25 11:15:29,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:29,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:29,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:29,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:30,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:32,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:32,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:34,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:34,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 11:15:34,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:15:34,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-09-25 11:15:34,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:34,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:34,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:34,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 11:15:34,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 11:15:34,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:34,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:34,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:34,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:34,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:34,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:34,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:15:34,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:34,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:34,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:34,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:15:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:34,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:34,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:34,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:15:34,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:34,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 11:15:34,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:34,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:34,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:34,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:15:34,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:34,612 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:15:34,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814283918] [2020-09-25 11:15:34,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:34,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:15:34,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696741558] [2020-09-25 11:15:34,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:15:34,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:34,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:15:34,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:15:34,616 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 6 states. [2020-09-25 11:15:37,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:37,456 INFO L93 Difference]: Finished difference Result 1864 states and 2490 transitions. [2020-09-25 11:15:37,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:15:37,458 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-09-25 11:15:37,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:37,473 INFO L225 Difference]: With dead ends: 1864 [2020-09-25 11:15:37,473 INFO L226 Difference]: Without dead ends: 1273 [2020-09-25 11:15:37,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:15:37,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-09-25 11:15:37,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1226. [2020-09-25 11:15:37,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1226 states. [2020-09-25 11:15:37,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1562 transitions. [2020-09-25 11:15:37,574 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1562 transitions. Word has length 166 [2020-09-25 11:15:37,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:37,576 INFO L479 AbstractCegarLoop]: Abstraction has 1226 states and 1562 transitions. [2020-09-25 11:15:37,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:15:37,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1562 transitions. [2020-09-25 11:15:37,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 11:15:37,583 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:37,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:15:37,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:15:37,584 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:37,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:37,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1054949660, now seen corresponding path program 1 times [2020-09-25 11:15:37,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:37,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220671045] [2020-09-25 11:15:37,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:37,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:37,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:37,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:39,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:39,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:39,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:42,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:42,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 11:15:42,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:15:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 11:15:42,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:42,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:15:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 11:15:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 11:15:42,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:42,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:42,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:42,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:42,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:42,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:42,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:15:42,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:42,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:42,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:42,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:42,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:42,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:42,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:15:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:42,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:42,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:42,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:15:42,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:42,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:15:42,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:42,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:42,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:42,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:42,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:42,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 11:15:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:42,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:42,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:42,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:15:42,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:42,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 11:15:42,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:42,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:42,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:15:42,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:42,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:15:42,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:43,295 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 11:15:43,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220671045] [2020-09-25 11:15:43,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:43,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:15:43,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618795220] [2020-09-25 11:15:43,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:15:43,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:43,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:15:43,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:15:43,298 INFO L87 Difference]: Start difference. First operand 1226 states and 1562 transitions. Second operand 8 states. [2020-09-25 11:15:46,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:46,252 INFO L93 Difference]: Finished difference Result 2702 states and 3553 transitions. [2020-09-25 11:15:46,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:15:46,253 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 190 [2020-09-25 11:15:46,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:46,264 INFO L225 Difference]: With dead ends: 2702 [2020-09-25 11:15:46,265 INFO L226 Difference]: Without dead ends: 1400 [2020-09-25 11:15:46,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:15:46,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2020-09-25 11:15:46,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1374. [2020-09-25 11:15:46,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1374 states. [2020-09-25 11:15:46,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 1728 transitions. [2020-09-25 11:15:46,348 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 1728 transitions. Word has length 190 [2020-09-25 11:15:46,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:46,349 INFO L479 AbstractCegarLoop]: Abstraction has 1374 states and 1728 transitions. [2020-09-25 11:15:46,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:15:46,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 1728 transitions. [2020-09-25 11:15:46,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 11:15:46,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:46,359 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:15:46,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:15:46,359 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:46,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:46,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1817707598, now seen corresponding path program 1 times [2020-09-25 11:15:46,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:46,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325962797] [2020-09-25 11:15:46,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:46,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:46,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:46,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:46,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:47,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:49,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:50,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:51,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:51,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-25 11:15:51,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:15:51,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 11:15:51,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:51,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:51,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:15:51,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:15:51,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-09-25 11:15:51,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:15:51,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:51,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:51,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:51,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:51,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:51,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 11:15:51,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:51,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:15:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:51,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:15:51,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:15:51,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:15:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:51,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:52,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:52,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:52,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 11:15:52,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:15:52,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-09-25 11:15:52,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:52,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:52,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:52,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:15:52,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 11:15:52,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:15:52,610 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:15:52,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325962797] [2020-09-25 11:15:52,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:52,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:15:52,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400373934] [2020-09-25 11:15:52,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:15:52,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:52,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:15:52,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:15:52,620 INFO L87 Difference]: Start difference. First operand 1374 states and 1728 transitions. Second operand 13 states. [2020-09-25 11:15:52,908 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-25 11:15:58,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:58,316 INFO L93 Difference]: Finished difference Result 4783 states and 6219 transitions. [2020-09-25 11:15:58,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 11:15:58,318 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 216 [2020-09-25 11:15:58,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:58,337 INFO L225 Difference]: With dead ends: 4783 [2020-09-25 11:15:58,338 INFO L226 Difference]: Without dead ends: 3431 [2020-09-25 11:15:58,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=191, Invalid=621, Unknown=0, NotChecked=0, Total=812 [2020-09-25 11:15:58,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2020-09-25 11:15:58,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 2856. [2020-09-25 11:15:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2856 states. [2020-09-25 11:15:58,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 3540 transitions. [2020-09-25 11:15:58,440 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 3540 transitions. Word has length 216 [2020-09-25 11:15:58,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:58,440 INFO L479 AbstractCegarLoop]: Abstraction has 2856 states and 3540 transitions. [2020-09-25 11:15:58,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:15:58,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 3540 transitions. [2020-09-25 11:15:58,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-09-25 11:15:58,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:58,454 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:15:58,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:15:58,454 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:58,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:58,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1548778560, now seen corresponding path program 1 times [2020-09-25 11:15:58,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:58,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353314472] [2020-09-25 11:15:58,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:58,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:58,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:59,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:59,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:00,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:02,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:02,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-09-25 11:16:02,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:16:02,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3874 [2020-09-25 11:16:02,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:02,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:02,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:16:02,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:16:02,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-09-25 11:16:02,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:02,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:02,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:02,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:02,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:02,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:02,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:16:02,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:02,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:02,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:16:02,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:16:02,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:02,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:02,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:02,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:02,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 11:16:02,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:16:02,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 11:16:02,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:02,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:02,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:02,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:02,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:16:02,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:02,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 11:16:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:02,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:02,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:03,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:03,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 11:16:03,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:16:03,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-09-25 11:16:03,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:03,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:16:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 11:16:03,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:16:03,332 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 11:16:03,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353314472] [2020-09-25 11:16:03,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:03,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:16:03,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664615393] [2020-09-25 11:16:03,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:16:03,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:03,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:16:03,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:16:03,334 INFO L87 Difference]: Start difference. First operand 2856 states and 3540 transitions. Second operand 10 states. [2020-09-25 11:16:07,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:07,779 INFO L93 Difference]: Finished difference Result 7284 states and 9374 transitions. [2020-09-25 11:16:07,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:16:07,780 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 259 [2020-09-25 11:16:07,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:07,781 INFO L225 Difference]: With dead ends: 7284 [2020-09-25 11:16:07,781 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 11:16:07,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:16:07,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 11:16:07,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 11:16:07,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 11:16:07,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 11:16:07,800 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 259 [2020-09-25 11:16:07,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:07,801 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 11:16:07,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:16:07,801 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 11:16:07,801 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 11:16:07,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:16:07,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.