/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:05:11,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:05:11,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:05:11,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:05:11,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:05:11,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:05:11,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:05:11,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:05:11,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:05:11,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:05:11,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:05:11,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:05:11,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:05:11,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:05:11,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:05:11,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:05:11,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:05:11,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:05:11,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:05:11,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:05:11,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:05:11,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:05:11,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:05:11,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:05:11,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:05:11,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:05:11,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:05:11,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:05:11,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:05:11,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:05:11,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:05:11,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:05:11,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:05:11,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:05:11,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:05:11,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:05:11,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:05:11,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:05:11,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:05:11,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:05:11,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:05:11,069 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:05:11,094 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:05:11,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:05:11,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:05:11,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:05:11,096 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:05:11,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:05:11,097 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:05:11,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:05:11,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:05:11,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:05:11,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:05:11,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:05:11,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:05:11,098 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:05:11,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:05:11,099 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:05:11,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:05:11,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:05:11,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:05:11,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:05:11,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:05:11,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:05:11,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:05:11,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:05:11,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:05:11,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:05:11,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:05:11,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:05:11,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:05:11,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:05:11,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:05:11,586 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:05:11,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:05:11,594 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:05:11,596 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:05:11,597 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13.c [2020-09-25 09:05:11,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf81ada7d/3f96fb8b2d2a4ab5b371c755503e95a1/FLAG08938ba6c [2020-09-25 09:05:12,348 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:05:12,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label13.c [2020-09-25 09:05:12,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf81ada7d/3f96fb8b2d2a4ab5b371c755503e95a1/FLAG08938ba6c [2020-09-25 09:05:12,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf81ada7d/3f96fb8b2d2a4ab5b371c755503e95a1 [2020-09-25 09:05:12,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:05:12,569 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:05:12,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:12,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:05:12,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:05:12,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:12" (1/1) ... [2020-09-25 09:05:12,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66214dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:12, skipping insertion in model container [2020-09-25 09:05:12,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:12" (1/1) ... [2020-09-25 09:05:12,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:05:12,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:05:13,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:13,096 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:05:13,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:13,339 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:05:13,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:13 WrapperNode [2020-09-25 09:05:13,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:13,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:05:13,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:05:13,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:05:13,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:13" (1/1) ... [2020-09-25 09:05:13,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:13" (1/1) ... [2020-09-25 09:05:13,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:13" (1/1) ... [2020-09-25 09:05:13,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:13" (1/1) ... [2020-09-25 09:05:13,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:13" (1/1) ... [2020-09-25 09:05:13,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:13" (1/1) ... [2020-09-25 09:05:13,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:13" (1/1) ... [2020-09-25 09:05:13,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:05:13,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:05:13,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:05:13,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:05:13,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:05:13,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:05:13,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:05:13,566 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:05:13,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:05:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:05:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:05:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:05:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:05:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:05:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:05:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:05:14,989 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:05:14,989 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:05:15,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:15 BoogieIcfgContainer [2020-09-25 09:05:15,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:05:15,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:05:15,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:05:15,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:05:15,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:05:12" (1/3) ... [2020-09-25 09:05:15,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386a18c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:15, skipping insertion in model container [2020-09-25 09:05:15,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:13" (2/3) ... [2020-09-25 09:05:15,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386a18c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:15, skipping insertion in model container [2020-09-25 09:05:15,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:15" (3/3) ... [2020-09-25 09:05:15,025 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label13.c [2020-09-25 09:05:15,037 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:05:15,051 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:05:15,073 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:05:15,111 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:05:15,112 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:05:15,112 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:05:15,112 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:05:15,112 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:05:15,112 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:05:15,113 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:05:15,113 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:05:15,143 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:05:15,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 09:05:15,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:15,156 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] [2020-09-25 09:05:15,157 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:15,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:15,165 INFO L82 PathProgramCache]: Analyzing trace with hash -538548697, now seen corresponding path program 1 times [2020-09-25 09:05:15,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:15,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047597280] [2020-09-25 09:05:15,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:15,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:15,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:15,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:16,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:16,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 09:05:16,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:05:16,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1254 [2020-09-25 09:05:16,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:16,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:16,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:16,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:05:16,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 09:05:16,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:05:16,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:16,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:16,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:16,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:16,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:16,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:05:16,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:16,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:05:16,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:16,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:16,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047597280] [2020-09-25 09:05:16,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:16,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:05:16,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487615143] [2020-09-25 09:05:16,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:05:16,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:16,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:05:16,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:05:16,890 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 09:05:19,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:19,749 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-25 09:05:19,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:05:19,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-09-25 09:05:19,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:19,779 INFO L225 Difference]: With dead ends: 1352 [2020-09-25 09:05:19,779 INFO L226 Difference]: Without dead ends: 806 [2020-09-25 09:05:19,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:19,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-25 09:05:19,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-25 09:05:19,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-25 09:05:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-25 09:05:19,910 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 74 [2020-09-25 09:05:19,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:19,910 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-25 09:05:19,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:05:19,911 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-25 09:05:19,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 09:05:19,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:19,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:19,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:05:19,924 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:19,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:19,943 INFO L82 PathProgramCache]: Analyzing trace with hash 607028325, now seen corresponding path program 1 times [2020-09-25 09:05:19,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:19,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948686000] [2020-09-25 09:05:19,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:20,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:20,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:20,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:20,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:20,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:21,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:21,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:22,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:24,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:24,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 09:05:24,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:05:24,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:05:24,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:24,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:24,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:24,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:05:24,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 09:05:25,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:05:25,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:25,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:25,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:25,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:25,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:25,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 09:05:25,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:25,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:25,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:25,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:25,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:05:25,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:25,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:25,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:25,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:25,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:25,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:05:25,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:25,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-25 09:05:25,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:25,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:25,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:25,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:25,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 09:05:25,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:25,551 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:05:25,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948686000] [2020-09-25 09:05:25,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:25,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:05:25,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903902978] [2020-09-25 09:05:25,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:05:25,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:25,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:05:25,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:25,556 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 6 states. [2020-09-25 09:05:27,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:27,346 INFO L93 Difference]: Finished difference Result 1057 states and 1392 transitions. [2020-09-25 09:05:27,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:05:27,347 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-09-25 09:05:27,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:27,354 INFO L225 Difference]: With dead ends: 1057 [2020-09-25 09:05:27,355 INFO L226 Difference]: Without dead ends: 1055 [2020-09-25 09:05:27,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:27,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-09-25 09:05:27,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 879. [2020-09-25 09:05:27,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-09-25 09:05:27,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1129 transitions. [2020-09-25 09:05:27,421 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1129 transitions. Word has length 157 [2020-09-25 09:05:27,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:27,426 INFO L479 AbstractCegarLoop]: Abstraction has 879 states and 1129 transitions. [2020-09-25 09:05:27,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:05:27,426 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1129 transitions. [2020-09-25 09:05:27,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 09:05:27,439 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:27,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:27,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:05:27,441 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:27,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:27,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1359580747, now seen corresponding path program 1 times [2020-09-25 09:05:27,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:27,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406036289] [2020-09-25 09:05:27,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:27,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:27,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:27,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:27,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:28,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:29,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:29,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:29,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:31,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:31,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 09:05:31,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:05:31,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4370 [2020-09-25 09:05:31,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:31,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:31,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:31,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:05:31,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 09:05:31,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:31,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:31,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:31,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:31,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:31,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:31,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:05:31,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:31,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:31,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:31,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:31,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:31,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:31,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:31,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:32,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:32,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:05:32,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:32,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 09:05:32,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:32,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:05:32,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:32,174 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:32,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406036289] [2020-09-25 09:05:32,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:32,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:05:32,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949082757] [2020-09-25 09:05:32,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:05:32,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:32,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:05:32,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:32,179 INFO L87 Difference]: Start difference. First operand 879 states and 1129 transitions. Second operand 6 states. [2020-09-25 09:05:34,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:34,762 INFO L93 Difference]: Finished difference Result 2425 states and 3308 transitions. [2020-09-25 09:05:34,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:05:34,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2020-09-25 09:05:34,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:34,776 INFO L225 Difference]: With dead ends: 2425 [2020-09-25 09:05:34,777 INFO L226 Difference]: Without dead ends: 1712 [2020-09-25 09:05:34,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:34,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2020-09-25 09:05:34,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1503. [2020-09-25 09:05:34,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1503 states. [2020-09-25 09:05:34,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 2034 transitions. [2020-09-25 09:05:34,832 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 2034 transitions. Word has length 163 [2020-09-25 09:05:34,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:34,832 INFO L479 AbstractCegarLoop]: Abstraction has 1503 states and 2034 transitions. [2020-09-25 09:05:34,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:05:34,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 2034 transitions. [2020-09-25 09:05:34,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 09:05:34,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:34,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:34,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:05:34,837 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:34,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:34,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1151994247, now seen corresponding path program 1 times [2020-09-25 09:05:34,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:34,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404868527] [2020-09-25 09:05:34,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:34,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:34,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:35,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:37,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:38,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:38,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:39,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:39,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 09:05:39,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:05:39,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 09:05:39,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:39,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:39,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:39,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:05:39,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 09:05:39,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:39,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:39,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:39,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:39,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:39,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:39,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:05:39,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:39,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:05:39,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:39,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:40,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:40,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:40,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 09:05:40,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:40,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 09:05:40,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:40,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:40,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:40,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:40,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 09:05:40,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:40,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404868527] [2020-09-25 09:05:40,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:40,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:05:40,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656096117] [2020-09-25 09:05:40,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:05:40,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:40,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:05:40,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:40,366 INFO L87 Difference]: Start difference. First operand 1503 states and 2034 transitions. Second operand 7 states. [2020-09-25 09:05:42,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:42,602 INFO L93 Difference]: Finished difference Result 4154 states and 5982 transitions. [2020-09-25 09:05:42,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:05:42,602 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-09-25 09:05:42,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:42,621 INFO L225 Difference]: With dead ends: 4154 [2020-09-25 09:05:42,621 INFO L226 Difference]: Without dead ends: 2666 [2020-09-25 09:05:42,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:05:42,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2020-09-25 09:05:42,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 1994. [2020-09-25 09:05:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1994 states. [2020-09-25 09:05:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 2668 transitions. [2020-09-25 09:05:42,734 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 2668 transitions. Word has length 182 [2020-09-25 09:05:42,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:42,734 INFO L479 AbstractCegarLoop]: Abstraction has 1994 states and 2668 transitions. [2020-09-25 09:05:42,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:05:42,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 2668 transitions. [2020-09-25 09:05:42,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 09:05:42,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:42,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:42,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:05:42,744 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:42,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:42,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1169175391, now seen corresponding path program 1 times [2020-09-25 09:05:42,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:42,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237859458] [2020-09-25 09:05:42,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:42,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:42,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:43,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:46,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:46,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:46,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:47,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:47,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 09:05:47,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:05:47,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 09:05:47,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:47,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:05:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-09-25 09:05:47,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:47,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:47,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:47,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:47,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:47,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:47,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 09:05:47,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:47,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:47,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:47,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:05:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:47,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:48,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:48,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 09:05:48,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:48,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-09-25 09:05:48,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:48,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:48,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:48,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:48,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 09:05:48,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:48,809 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:48,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237859458] [2020-09-25 09:05:48,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:48,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:05:48,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231797547] [2020-09-25 09:05:48,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:05:48,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:48,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:05:48,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:05:48,814 INFO L87 Difference]: Start difference. First operand 1994 states and 2668 transitions. Second operand 10 states. [2020-09-25 09:05:52,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:52,484 INFO L93 Difference]: Finished difference Result 4657 states and 6420 transitions. [2020-09-25 09:05:52,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:05:52,485 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 206 [2020-09-25 09:05:52,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:52,498 INFO L225 Difference]: With dead ends: 4657 [2020-09-25 09:05:52,499 INFO L226 Difference]: Without dead ends: 2800 [2020-09-25 09:05:52,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:05:52,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2020-09-25 09:05:52,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 2321. [2020-09-25 09:05:52,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2321 states. [2020-09-25 09:05:52,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3063 transitions. [2020-09-25 09:05:52,574 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3063 transitions. Word has length 206 [2020-09-25 09:05:52,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:52,575 INFO L479 AbstractCegarLoop]: Abstraction has 2321 states and 3063 transitions. [2020-09-25 09:05:52,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:05:52,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3063 transitions. [2020-09-25 09:05:52,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 09:05:52,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:52,581 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:52,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:05:52,582 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:52,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:52,582 INFO L82 PathProgramCache]: Analyzing trace with hash -319693200, now seen corresponding path program 1 times [2020-09-25 09:05:52,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:52,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413085717] [2020-09-25 09:05:52,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:52,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:52,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:52,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:53,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:53,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:53,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:54,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:55,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:56,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:57,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:57,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 09:05:57,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:05:57,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 09:05:57,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:57,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:57,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:57,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:05:57,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-25 09:05:57,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:57,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:57,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:57,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:57,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:57,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:57,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:05:57,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:57,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:57,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:57,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:57,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:05:57,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:57,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:57,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:57,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:57,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:57,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:05:57,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:57,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 09:05:57,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:57,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 09:05:57,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:57,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:05:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:58,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:58,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:58,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:58,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:05:58,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:58,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-09-25 09:05:58,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:58,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:58,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:58,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:58,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:05:58,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:58,582 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 09:05:58,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413085717] [2020-09-25 09:05:58,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:58,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:05:58,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553228240] [2020-09-25 09:05:58,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:05:58,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:58,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:05:58,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:05:58,584 INFO L87 Difference]: Start difference. First operand 2321 states and 3063 transitions. Second operand 10 states.