/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:17:23,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:17:23,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:17:24,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:17:24,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:17:24,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:17:24,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:17:24,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:17:24,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:17:24,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:17:24,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:17:24,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:17:24,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:17:24,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:17:24,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:17:24,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:17:24,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:17:24,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:17:24,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:17:24,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:17:24,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:17:24,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:17:24,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:17:24,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:17:24,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:17:24,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:17:24,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:17:24,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:17:24,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:17:24,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:17:24,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:17:24,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:17:24,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:17:24,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:17:24,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:17:24,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:17:24,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:17:24,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:17:24,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:17:24,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:17:24,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:17:24,069 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 11:17:24,119 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:17:24,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:17:24,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:17:24,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:17:24,121 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:17:24,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:17:24,122 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:17:24,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:17:24,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:17:24,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:17:24,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:17:24,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:17:24,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:17:24,124 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:17:24,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:17:24,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:17:24,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:17:24,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:17:24,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:17:24,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:17:24,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:17:24,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:17:24,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:17:24,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:17:24,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:17:24,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:17:24,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:17:24,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:17:24,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:17:24,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:17:24,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:17:24,571 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:17:24,576 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:17:24,578 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:17:24,579 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:17:24,580 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label47.c [2020-09-25 11:17:24,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d98e99fed/fd0877ce796842e5ab43eebe37838a3c/FLAG88abc4d57 [2020-09-25 11:17:25,262 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:17:25,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label47.c [2020-09-25 11:17:25,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d98e99fed/fd0877ce796842e5ab43eebe37838a3c/FLAG88abc4d57 [2020-09-25 11:17:25,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d98e99fed/fd0877ce796842e5ab43eebe37838a3c [2020-09-25 11:17:25,498 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:17:25,504 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:17:25,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:25,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:17:25,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:17:25,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:25" (1/1) ... [2020-09-25 11:17:25,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:25, skipping insertion in model container [2020-09-25 11:17:25,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:25" (1/1) ... [2020-09-25 11:17:25,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:17:25,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:17:26,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:26,056 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:17:26,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:26,346 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:17:26,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:26 WrapperNode [2020-09-25 11:17:26,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:26,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:17:26,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:17:26,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:17:26,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:26" (1/1) ... [2020-09-25 11:17:26,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:26" (1/1) ... [2020-09-25 11:17:26,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:26" (1/1) ... [2020-09-25 11:17:26,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:26" (1/1) ... [2020-09-25 11:17:26,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:26" (1/1) ... [2020-09-25 11:17:26,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:26" (1/1) ... [2020-09-25 11:17:26,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:26" (1/1) ... [2020-09-25 11:17:26,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:17:26,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:17:26,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:17:26,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:17:26,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:17:26,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:17:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:17:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:17:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:17:26,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:17:26,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:17:26,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:17:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:17:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:17:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:17:26,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:17:27,863 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:17:27,863 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:17:27,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:27 BoogieIcfgContainer [2020-09-25 11:17:27,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:17:27,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:17:27,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:17:27,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:17:27,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:17:25" (1/3) ... [2020-09-25 11:17:27,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:27, skipping insertion in model container [2020-09-25 11:17:27,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:26" (2/3) ... [2020-09-25 11:17:27,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:27, skipping insertion in model container [2020-09-25 11:17:27,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:27" (3/3) ... [2020-09-25 11:17:27,881 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label47.c [2020-09-25 11:17:27,892 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:17:27,904 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:17:27,926 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:17:27,962 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:17:27,963 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:17:27,963 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:17:27,963 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:17:27,963 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:17:27,964 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:17:27,964 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:17:27,964 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:17:27,997 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:17:28,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 11:17:28,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:28,018 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] [2020-09-25 11:17:28,019 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:28,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:28,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1682076970, now seen corresponding path program 1 times [2020-09-25 11:17:28,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:28,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100677907] [2020-09-25 11:17:28,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:28,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:28,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:28,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:29,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:29,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:31,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:32,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:32,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:32,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:33,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:33,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 11:17:33,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:17:33,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 11:17:33,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:33,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:17:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:17:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 11:17:33,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:17:33,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:33,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:33,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:33,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:33,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:33,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:17:33,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:33,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:33,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:33,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:33,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:17:33,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:33,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:33,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100677907] [2020-09-25 11:17:33,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:17:33,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:17:33,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892124275] [2020-09-25 11:17:33,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:17:33,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:33,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:17:33,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:17:33,625 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:17:35,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:35,812 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 11:17:35,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:17:35,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-09-25 11:17:35,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:35,860 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 11:17:35,860 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 11:17:35,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:35,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 11:17:35,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 11:17:35,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 11:17:35,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 11:17:35,991 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 133 [2020-09-25 11:17:35,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:35,992 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 11:17:35,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:17:35,992 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 11:17:35,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 11:17:35,999 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:36,000 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:36,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:17:36,000 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:36,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:36,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1624674134, now seen corresponding path program 1 times [2020-09-25 11:17:36,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:36,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412469780] [2020-09-25 11:17:36,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:36,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:36,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:36,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:37,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:37,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:38,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:41,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:41,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 11:17:41,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:17:41,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 11:17:41,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:41,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:41,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 11:17:41,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 11:17:41,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:41,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:41,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:41,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:41,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:41,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:41,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:17:41,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:41,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:41,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:41,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:41,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:41,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:41,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:41,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:41,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:41,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:17:41,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:41,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:17:41,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:41,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:41,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:41,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:41,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:17:41,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:41,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:41,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412469780] [2020-09-25 11:17:41,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:41,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:17:41,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560959955] [2020-09-25 11:17:41,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:17:41,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:41,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:17:41,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:41,333 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 11:17:43,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:43,234 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-25 11:17:43,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:17:43,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-09-25 11:17:43,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:43,244 INFO L225 Difference]: With dead ends: 1757 [2020-09-25 11:17:43,244 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 11:17:43,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:17:43,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 11:17:43,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-25 11:17:43,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 11:17:43,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1282 transitions. [2020-09-25 11:17:43,292 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1282 transitions. Word has length 151 [2020-09-25 11:17:43,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:43,293 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1282 transitions. [2020-09-25 11:17:43,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:17:43,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1282 transitions. [2020-09-25 11:17:43,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 11:17:43,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:43,300 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] [2020-09-25 11:17:43,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:17:43,300 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:43,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:43,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1984167013, now seen corresponding path program 1 times [2020-09-25 11:17:43,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:43,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099377979] [2020-09-25 11:17:43,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:43,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:43,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:43,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:46,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:46,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:48,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:48,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 11:17:48,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:17:48,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 11:17:48,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:48,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:48,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:17:48,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 11:17:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 11:17:48,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:48,726 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-09-25 11:17:49,068 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-09-25 11:17:49,219 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2020-09-25 11:17:49,363 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 29 [2020-09-25 11:17:49,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:49,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:49,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:49,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:49,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:49,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:17:49,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:49,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:49,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:49,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:49,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:49,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:49,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:49,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:49,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:49,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:17:49,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:49,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:17:49,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:49,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:49,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:49,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:49,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 11:17:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:49,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:49,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:49,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:17:49,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:49,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 11:17:49,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:49,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:49,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:17:49,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 11:17:49,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 11:17:49,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099377979] [2020-09-25 11:17:49,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:49,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:17:49,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410288817] [2020-09-25 11:17:49,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:17:49,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:49,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:17:49,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:17:49,894 INFO L87 Difference]: Start difference. First operand 1036 states and 1282 transitions. Second operand 13 states. [2020-09-25 11:17:50,808 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2020-09-25 11:17:52,153 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-09-25 11:17:52,664 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-09-25 11:17:53,461 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-09-25 11:17:55,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:55,069 INFO L93 Difference]: Finished difference Result 2886 states and 3809 transitions. [2020-09-25 11:17:55,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-25 11:17:55,070 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 168 [2020-09-25 11:17:55,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:55,082 INFO L225 Difference]: With dead ends: 2886 [2020-09-25 11:17:55,083 INFO L226 Difference]: Without dead ends: 1608 [2020-09-25 11:17:55,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=272, Invalid=598, Unknown=0, NotChecked=0, Total=870 [2020-09-25 11:17:55,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-09-25 11:17:55,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1584. [2020-09-25 11:17:55,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-09-25 11:17:55,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 1903 transitions. [2020-09-25 11:17:55,156 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 1903 transitions. Word has length 168 [2020-09-25 11:17:55,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:55,157 INFO L479 AbstractCegarLoop]: Abstraction has 1584 states and 1903 transitions. [2020-09-25 11:17:55,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:17:55,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 1903 transitions. [2020-09-25 11:17:55,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 11:17:55,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:55,169 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:55,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:17:55,169 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:55,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:55,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1527084426, now seen corresponding path program 1 times [2020-09-25 11:17:55,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:55,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495108378] [2020-09-25 11:17:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:55,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:55,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:55,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:55,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:56,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:56,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:58,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:00,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:00,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 11:18:00,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:18:00,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:18:00,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:00,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:00,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:00,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 11:18:00,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 11:18:00,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:00,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:00,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:00,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:00,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:00,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:00,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:18:00,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:00,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:00,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:00,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:00,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:00,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:18:00,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:00,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:00,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:00,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:18:00,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:00,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 11:18:00,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:00,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:00,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:00,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:00,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 11:18:00,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:00,496 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:00,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495108378] [2020-09-25 11:18:00,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:00,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:18:00,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324185822] [2020-09-25 11:18:00,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:18:00,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:00,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:18:00,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:00,500 INFO L87 Difference]: Start difference. First operand 1584 states and 1903 transitions. Second operand 5 states. [2020-09-25 11:18:02,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:02,415 INFO L93 Difference]: Finished difference Result 3498 states and 4303 transitions. [2020-09-25 11:18:02,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:18:02,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 11:18:02,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:02,427 INFO L225 Difference]: With dead ends: 3498 [2020-09-25 11:18:02,427 INFO L226 Difference]: Without dead ends: 1936 [2020-09-25 11:18:02,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:18:02,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2020-09-25 11:18:02,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1888. [2020-09-25 11:18:02,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1888 states. [2020-09-25 11:18:02,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2240 transitions. [2020-09-25 11:18:02,489 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2240 transitions. Word has length 168 [2020-09-25 11:18:02,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:02,490 INFO L479 AbstractCegarLoop]: Abstraction has 1888 states and 2240 transitions. [2020-09-25 11:18:02,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:18:02,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2240 transitions. [2020-09-25 11:18:02,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-25 11:18:02,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:02,499 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, 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] [2020-09-25 11:18:02,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:18:02,499 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:02,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:02,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1915300853, now seen corresponding path program 1 times [2020-09-25 11:18:02,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:02,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255194894] [2020-09-25 11:18:02,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:02,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:02,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:02,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:03,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:03,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:03,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:07,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:07,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 11:18:07,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:18:07,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 11:18:07,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:07,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:18:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-09-25 11:18:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 11:18:07,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:08,226 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2020-09-25 11:18:08,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:08,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:08,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:08,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:08,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:08,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:18:08,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:08,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:08,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:08,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:08,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:08,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:08,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:08,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:08,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:08,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:18:08,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:08,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:18:08,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:08,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:08,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:08,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:08,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:08,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:08,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 11:18:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:08,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:08,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:08,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:18:08,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:08,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 11:18:08,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:08,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 11:18:08,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:09,154 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-25 11:18:09,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255194894] [2020-09-25 11:18:09,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:09,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 11:18:09,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411459411] [2020-09-25 11:18:09,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 11:18:09,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:09,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 11:18:09,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:18:09,157 INFO L87 Difference]: Start difference. First operand 1888 states and 2240 transitions. Second operand 14 states. [2020-09-25 11:18:11,324 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-25 11:18:11,996 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-25 11:18:12,257 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-09-25 11:18:12,835 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-25 11:18:13,306 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-09-25 11:18:13,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:13,708 INFO L93 Difference]: Finished difference Result 5708 states and 7044 transitions. [2020-09-25 11:18:13,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 11:18:13,709 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 220 [2020-09-25 11:18:13,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:13,726 INFO L225 Difference]: With dead ends: 5708 [2020-09-25 11:18:13,726 INFO L226 Difference]: Without dead ends: 3540 [2020-09-25 11:18:13,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=210, Invalid=390, Unknown=0, NotChecked=0, Total=600 [2020-09-25 11:18:13,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3540 states. [2020-09-25 11:18:13,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3540 to 3220. [2020-09-25 11:18:13,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3220 states. [2020-09-25 11:18:13,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3220 states to 3220 states and 3707 transitions. [2020-09-25 11:18:13,839 INFO L78 Accepts]: Start accepts. Automaton has 3220 states and 3707 transitions. Word has length 220 [2020-09-25 11:18:13,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:13,840 INFO L479 AbstractCegarLoop]: Abstraction has 3220 states and 3707 transitions. [2020-09-25 11:18:13,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 11:18:13,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3220 states and 3707 transitions. [2020-09-25 11:18:13,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 11:18:13,853 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:13,853 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:18:13,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:18:13,854 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:13,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:13,854 INFO L82 PathProgramCache]: Analyzing trace with hash -675007840, now seen corresponding path program 1 times [2020-09-25 11:18:13,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:13,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903018198] [2020-09-25 11:18:13,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:13,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:14,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking...