/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:23:04,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:23:04,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:23:04,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:23:04,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:23:04,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:23:04,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:23:04,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:23:04,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:23:04,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:23:04,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:23:04,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:23:04,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:23:04,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:23:04,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:23:04,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:23:04,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:23:04,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:23:04,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:23:04,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:23:04,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:23:04,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:23:04,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:23:04,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:23:04,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:23:04,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:23:04,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:23:04,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:23:04,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:23:04,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:23:04,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:23:04,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:23:04,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:23:04,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:23:04,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:23:04,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:23:04,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:23:04,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:23:04,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:23:04,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:23:04,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:23:04,090 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:23:04,114 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:23:04,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:23:04,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:23:04,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:23:04,116 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:23:04,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:23:04,116 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:23:04,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:23:04,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:23:04,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:23:04,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:23:04,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:23:04,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:23:04,118 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:23:04,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:23:04,118 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:23:04,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:23:04,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:23:04,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:23:04,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:23:04,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:23:04,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:23:04,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:23:04,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:23:04,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:23:04,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:23:04,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:23:04,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:23:04,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:23:04,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:23:04,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:23:04,596 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:23:04,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:23:04,603 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:23:04,607 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:23:04,608 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-09-24 18:23:04,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac0f06e44/af0c329ab3ec499291e847b8e0c10c2d/FLAG4ddc791ab [2020-09-24 18:23:05,345 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:23:05,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label46.c [2020-09-24 18:23:05,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac0f06e44/af0c329ab3ec499291e847b8e0c10c2d/FLAG4ddc791ab [2020-09-24 18:23:05,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac0f06e44/af0c329ab3ec499291e847b8e0c10c2d [2020-09-24 18:23:05,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:23:05,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:23:05,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:05,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:23:05,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:23:05,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:05" (1/1) ... [2020-09-24 18:23:05,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674884e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:05, skipping insertion in model container [2020-09-24 18:23:05,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:05" (1/1) ... [2020-09-24 18:23:05,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:23:05,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:23:06,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:06,158 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:23:06,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:06,390 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:23:06,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:06 WrapperNode [2020-09-24 18:23:06,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:06,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:23:06,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:23:06,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:23:06,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:06" (1/1) ... [2020-09-24 18:23:06,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:06" (1/1) ... [2020-09-24 18:23:06,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:06" (1/1) ... [2020-09-24 18:23:06,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:06" (1/1) ... [2020-09-24 18:23:06,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:06" (1/1) ... [2020-09-24 18:23:06,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:06" (1/1) ... [2020-09-24 18:23:06,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:06" (1/1) ... [2020-09-24 18:23:06,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:23:06,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:23:06,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:23:06,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:23:06,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:23:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:23:06,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:23:06,585 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:23:06,585 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:23:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:23:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:23:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:23:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:23:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:23:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:23:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:23:07,936 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:23:07,936 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:23:07,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:07 BoogieIcfgContainer [2020-09-24 18:23:07,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:23:07,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:23:07,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:23:07,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:23:07,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:23:05" (1/3) ... [2020-09-24 18:23:07,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169e7aa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:07, skipping insertion in model container [2020-09-24 18:23:07,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:06" (2/3) ... [2020-09-24 18:23:07,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169e7aa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:07, skipping insertion in model container [2020-09-24 18:23:07,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:07" (3/3) ... [2020-09-24 18:23:07,955 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label46.c [2020-09-24 18:23:07,967 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:23:07,978 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:23:08,001 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:23:08,035 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:23:08,036 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:23:08,036 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:23:08,036 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:23:08,036 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:23:08,036 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:23:08,037 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:23:08,037 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:23:08,069 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:23:08,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-24 18:23:08,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:08,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:08,092 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:08,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:08,100 INFO L82 PathProgramCache]: Analyzing trace with hash -87322735, now seen corresponding path program 1 times [2020-09-24 18:23:08,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:08,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523169948] [2020-09-24 18:23:08,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:08,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:08,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:09,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:09,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:10,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:10,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:11,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:11,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:13,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:13,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:13,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-24 18:23:13,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:23:13,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-09-24 18:23:13,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:13,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:13,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:23:13,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 18:23:13,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:23:13,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:13,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:13,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:13,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:13,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:13,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 18:23:13,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:13,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:13,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:13,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:23:13,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:13,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:13,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523169948] [2020-09-24 18:23:13,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:13,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:23:13,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39813584] [2020-09-24 18:23:13,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:23:13,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:13,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:23:13,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:23:13,739 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:23:15,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:15,990 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-24 18:23:15,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:23:15,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-09-24 18:23:15,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:16,016 INFO L225 Difference]: With dead ends: 1248 [2020-09-24 18:23:16,017 INFO L226 Difference]: Without dead ends: 670 [2020-09-24 18:23:16,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:16,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-24 18:23:16,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-24 18:23:16,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-24 18:23:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-24 18:23:16,135 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 138 [2020-09-24 18:23:16,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:16,136 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-24 18:23:16,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:23:16,137 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-24 18:23:16,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-24 18:23:16,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:16,147 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:16,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:23:16,148 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:16,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:16,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1688822794, now seen corresponding path program 1 times [2020-09-24 18:23:16,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:16,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60528603] [2020-09-24 18:23:16,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:16,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:16,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:16,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:17,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:18,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:19,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:21,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:21,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-24 18:23:21,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:23:21,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:23:21,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:21,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:21,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:23:21,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 18:23:21,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:21,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:21,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:21,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:21,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:21,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:21,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:23:21,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:21,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:21,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:21,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:21,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:21,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:21,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:23:21,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:21,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:23:21,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:21,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:21,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:21,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:23:21,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:21,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60528603] [2020-09-24 18:23:21,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:21,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:21,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501388812] [2020-09-24 18:23:21,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:21,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:21,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:21,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:21,518 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-24 18:23:23,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:23,514 INFO L93 Difference]: Finished difference Result 1531 states and 1847 transitions. [2020-09-24 18:23:23,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:23,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-09-24 18:23:23,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:23,539 INFO L225 Difference]: With dead ends: 1531 [2020-09-24 18:23:23,539 INFO L226 Difference]: Without dead ends: 932 [2020-09-24 18:23:23,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:23,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2020-09-24 18:23:23,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 922. [2020-09-24 18:23:23,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 922 states. [2020-09-24 18:23:23,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1103 transitions. [2020-09-24 18:23:23,584 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1103 transitions. Word has length 155 [2020-09-24 18:23:23,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:23,585 INFO L479 AbstractCegarLoop]: Abstraction has 922 states and 1103 transitions. [2020-09-24 18:23:23,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:23,586 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1103 transitions. [2020-09-24 18:23:23,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-24 18:23:23,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:23,590 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:23,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:23:23,591 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:23,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:23,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1055258910, now seen corresponding path program 1 times [2020-09-24 18:23:23,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:23,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123635170] [2020-09-24 18:23:23,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:23,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:23,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:24,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:24,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:24,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:25,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:26,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:26,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:27,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:27,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:27,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:28,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:28,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:28,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:28,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 18:23:28,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 18:23:28,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:23:28,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:28,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:23:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:23:28,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:28,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:28,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:28,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:28,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:28,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:28,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:23:28,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:28,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:28,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:28,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:28,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:28,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:28,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:28,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:28,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:23:28,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:28,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:23:28,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:28,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:28,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:28,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:23:28,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:28,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:23:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:28,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:28,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:28,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:23:28,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:28,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 18:23:28,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:28,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:28,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:28,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:23:28,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:23:28,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123635170] [2020-09-24 18:23:28,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:28,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:23:28,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032181471] [2020-09-24 18:23:28,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:23:28,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:28,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:23:28,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:23:28,936 INFO L87 Difference]: Start difference. First operand 922 states and 1103 transitions. Second operand 8 states. [2020-09-24 18:23:32,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:32,158 INFO L93 Difference]: Finished difference Result 2196 states and 2741 transitions. [2020-09-24 18:23:32,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 18:23:32,160 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 173 [2020-09-24 18:23:32,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:32,171 INFO L225 Difference]: With dead ends: 2196 [2020-09-24 18:23:32,171 INFO L226 Difference]: Without dead ends: 1296 [2020-09-24 18:23:32,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 18:23:32,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2020-09-24 18:23:32,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1242. [2020-09-24 18:23:32,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1242 states. [2020-09-24 18:23:32,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1498 transitions. [2020-09-24 18:23:32,256 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1498 transitions. Word has length 173 [2020-09-24 18:23:32,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:32,257 INFO L479 AbstractCegarLoop]: Abstraction has 1242 states and 1498 transitions. [2020-09-24 18:23:32,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:23:32,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1498 transitions. [2020-09-24 18:23:32,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-24 18:23:32,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:32,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:32,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:23:32,265 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:32,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:32,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1139597150, now seen corresponding path program 1 times [2020-09-24 18:23:32,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:32,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846167067] [2020-09-24 18:23:32,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:32,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:32,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:33,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:34,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:34,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:37,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-24 18:23:37,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:23:37,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:23:37,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:37,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:37,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-24 18:23:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 18:23:37,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:37,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:37,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:37,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:37,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:37,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:23:37,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:37,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:37,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:37,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:37,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:37,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:37,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:37,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:23:37,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:37,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 18:23:37,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:23:37,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:37,604 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:37,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846167067] [2020-09-24 18:23:37,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:37,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:37,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363182211] [2020-09-24 18:23:37,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:37,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:37,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:37,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:37,613 INFO L87 Difference]: Start difference. First operand 1242 states and 1498 transitions. Second operand 5 states. [2020-09-24 18:23:39,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:39,831 INFO L93 Difference]: Finished difference Result 3494 states and 4377 transitions. [2020-09-24 18:23:39,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:39,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-09-24 18:23:39,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:39,852 INFO L225 Difference]: With dead ends: 3494 [2020-09-24 18:23:39,852 INFO L226 Difference]: Without dead ends: 2274 [2020-09-24 18:23:39,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:39,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2020-09-24 18:23:39,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 2176. [2020-09-24 18:23:39,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2176 states. [2020-09-24 18:23:39,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 2684 transitions. [2020-09-24 18:23:39,928 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 2684 transitions. Word has length 180 [2020-09-24 18:23:39,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:39,929 INFO L479 AbstractCegarLoop]: Abstraction has 2176 states and 2684 transitions. [2020-09-24 18:23:39,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:39,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 2684 transitions. [2020-09-24 18:23:39,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-24 18:23:39,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:39,939 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:39,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:23:39,939 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:39,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:39,940 INFO L82 PathProgramCache]: Analyzing trace with hash -12213563, now seen corresponding path program 1 times [2020-09-24 18:23:39,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:39,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086368773] [2020-09-24 18:23:39,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:39,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:40,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:40,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:40,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:44,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:44,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-24 18:23:44,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:23:44,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:23:44,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:44,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:23:44,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:23:44,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:45,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:45,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:45,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:45,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:45,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:45,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:23:45,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:45,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:45,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:45,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:45,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:45,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:45,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:23:45,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:45,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:23:45,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:45,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:45,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:45,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:23:45,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:45,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:23:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:45,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:45,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:45,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:23:45,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:45,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 18:23:45,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:23:45,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:23:45,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086368773] [2020-09-24 18:23:45,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:45,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:23:45,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821262748] [2020-09-24 18:23:45,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:45,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:45,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:45,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:45,321 INFO L87 Difference]: Start difference. First operand 2176 states and 2684 transitions. Second operand 7 states. [2020-09-24 18:23:47,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:47,195 INFO L93 Difference]: Finished difference Result 4488 states and 5641 transitions. [2020-09-24 18:23:47,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:23:47,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-09-24 18:23:47,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:47,208 INFO L225 Difference]: With dead ends: 4488 [2020-09-24 18:23:47,209 INFO L226 Difference]: Without dead ends: 2334 [2020-09-24 18:23:47,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:23:47,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2020-09-24 18:23:47,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 2045. [2020-09-24 18:23:47,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2045 states. [2020-09-24 18:23:47,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 2471 transitions. [2020-09-24 18:23:47,323 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 2471 transitions. Word has length 189 [2020-09-24 18:23:47,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:47,324 INFO L479 AbstractCegarLoop]: Abstraction has 2045 states and 2471 transitions. [2020-09-24 18:23:47,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:23:47,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 2471 transitions. [2020-09-24 18:23:47,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-24 18:23:47,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:47,337 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:47,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:23:47,338 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:47,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:47,338 INFO L82 PathProgramCache]: Analyzing trace with hash 77352814, now seen corresponding path program 1 times [2020-09-24 18:23:47,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:47,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169884385] [2020-09-24 18:23:47,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:47,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:47,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:47,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:47,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:49,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:50,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:50,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-24 18:23:50,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:23:50,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3528 [2020-09-24 18:23:50,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 18:23:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 18:23:50,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:51,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:51,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:51,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:51,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:51,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:51,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:23:51,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:51,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:51,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:51,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:51,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:51,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:51,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:51,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:51,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:23:51,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:51,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:23:51,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:51,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:51,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:51,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:51,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:51,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 18:23:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:51,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:51,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:51,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:23:51,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:51,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 18:23:51,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:51,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:51,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:51,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:23:51,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:51,184 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 18:23:51,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169884385] [2020-09-24 18:23:51,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:51,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:51,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425638846] [2020-09-24 18:23:51,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:51,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:51,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:51,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:51,189 INFO L87 Difference]: Start difference. First operand 2045 states and 2471 transitions. Second operand 5 states.