/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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:23:31,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:23:31,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:23:31,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:23:31,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:23:31,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:23:31,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:23:31,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:23:31,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:23:31,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:23:31,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:23:31,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:23:31,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:23:31,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:23:31,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:23:31,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:23:31,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:23:31,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:23:31,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:23:31,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:23:31,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:23:31,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:23:31,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:23:31,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:23:31,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:23:31,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:23:31,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:23:31,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:23:31,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:23:31,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 18:23:31,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:23:31,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:23:31,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:23:31,420 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 18:23:31,465 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:23:31,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:23:31,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:23:31,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:23:31,468 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:23:31,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:23:31,469 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:23:31,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:23:31,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:23:31,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:23:31,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:23:31,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:23:31,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:23:31,472 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:23:31,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:23:31,472 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:23:31,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:23:31,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:23:31,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:23:31,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:23:31,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:23:31,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:23:31,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:23:31,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:23:31,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:23:31,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:23:31,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:23:31,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:23:31,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:23:31,475 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 18:23:31,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:23:31,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:23:31,945 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:23:31,946 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:23:31,947 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:23:31,948 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-24 18:23:32,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6acf340b8/650a1a289f894242bf2364766bc47ab6/FLAG25da64086 [2020-09-24 18:23:32,674 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:23:32,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-24 18:23:32,688 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6acf340b8/650a1a289f894242bf2364766bc47ab6/FLAG25da64086 [2020-09-24 18:23:32,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6acf340b8/650a1a289f894242bf2364766bc47ab6 [2020-09-24 18:23:32,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:23:32,961 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:23:32,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:32,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:23:32,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:23:32,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:32" (1/1) ... [2020-09-24 18:23:32,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b5b041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:32, skipping insertion in model container [2020-09-24 18:23:32,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:32" (1/1) ... [2020-09-24 18:23:32,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:23:33,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:23:33,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:33,509 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:23:33,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:23:33,844 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:23:33,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:33 WrapperNode [2020-09-24 18:23:33,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:23:33,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:23:33,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:23:33,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:23:33,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:33" (1/1) ... [2020-09-24 18:23:33,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:33" (1/1) ... [2020-09-24 18:23:33,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:33" (1/1) ... [2020-09-24 18:23:33,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:33" (1/1) ... [2020-09-24 18:23:33,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:33" (1/1) ... [2020-09-24 18:23:33,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:33" (1/1) ... [2020-09-24 18:23:33,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:33" (1/1) ... [2020-09-24 18:23:33,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:23:33,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:23:33,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:23:33,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:23:33,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:33" (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 18:23:34,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:23:34,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:23:34,044 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:23:34,044 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:23:34,044 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:23:34,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:23:34,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:23:34,045 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:23:34,045 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:23:34,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:23:34,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:23:35,364 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:23:35,364 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:23:35,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:35 BoogieIcfgContainer [2020-09-24 18:23:35,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:23:35,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:23:35,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:23:35,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:23:35,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:23:32" (1/3) ... [2020-09-24 18:23:35,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7d0607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:35, skipping insertion in model container [2020-09-24 18:23:35,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:33" (2/3) ... [2020-09-24 18:23:35,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7d0607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:35, skipping insertion in model container [2020-09-24 18:23:35,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:35" (3/3) ... [2020-09-24 18:23:35,385 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label54.c [2020-09-24 18:23:35,397 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:23:35,410 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:23:35,434 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:23:35,470 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:23:35,471 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:23:35,471 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:23:35,471 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:23:35,471 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:23:35,472 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:23:35,472 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:23:35,472 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:23:35,507 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:23:35,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-24 18:23:35,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:35,531 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] [2020-09-24 18:23:35,531 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:35,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:35,540 INFO L82 PathProgramCache]: Analyzing trace with hash 79338610, now seen corresponding path program 1 times [2020-09-24 18:23:35,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:35,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24695837] [2020-09-24 18:23:35,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:35,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:36,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:36,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:36,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:37,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:38,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:38,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:39,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:40,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:40,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-24 18:23:40,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:23:40,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:23:40,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:40,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:40,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:23:40,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-24 18:23:40,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:23:41,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:41,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:41,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:41,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:41,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:41,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 18:23:41,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:41,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:41,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:41,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:23:41,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:41,131 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 18:23:41,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24695837] [2020-09-24 18:23:41,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:41,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:23:41,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191862638] [2020-09-24 18:23:41,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:23:41,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:41,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:23:41,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:23:41,178 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:23:43,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:43,446 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-24 18:23:43,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:23:43,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-09-24 18:23:43,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:43,475 INFO L225 Difference]: With dead ends: 1206 [2020-09-24 18:23:43,475 INFO L226 Difference]: Without dead ends: 628 [2020-09-24 18:23:43,485 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 [2020-09-24 18:23:43,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-24 18:23:43,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-24 18:23:43,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-24 18:23:43,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-24 18:23:43,600 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 127 [2020-09-24 18:23:43,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:43,601 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-24 18:23:43,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:23:43,601 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-24 18:23:43,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-24 18:23:43,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:43,614 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:43,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:23:43,615 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:43,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:43,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1464054185, now seen corresponding path program 1 times [2020-09-24 18:23:43,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:43,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919499799] [2020-09-24 18:23:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:43,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:43,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:44,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:44,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:44,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:45,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:48,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:48,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-24 18:23:48,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:23:48,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4696 [2020-09-24 18:23:48,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:48,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:48,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 18:23:48,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 18:23:48,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:48,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:48,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:48,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:48,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:48,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:48,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:23:48,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:48,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:48,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:48,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:48,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:48,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:23:48,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:48,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 18:23:48,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:48,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:23:48,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:48,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919499799] [2020-09-24 18:23:48,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:48,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:23:48,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159589636] [2020-09-24 18:23:48,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:23:48,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:48,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:23:48,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:48,661 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 6 states. [2020-09-24 18:23:51,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:51,293 INFO L93 Difference]: Finished difference Result 1678 states and 2148 transitions. [2020-09-24 18:23:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:23:51,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-09-24 18:23:51,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:51,300 INFO L225 Difference]: With dead ends: 1678 [2020-09-24 18:23:51,300 INFO L226 Difference]: Without dead ends: 712 [2020-09-24 18:23:51,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:23:51,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-09-24 18:23:51,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 702. [2020-09-24 18:23:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-09-24 18:23:51,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 833 transitions. [2020-09-24 18:23:51,363 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 833 transitions. Word has length 161 [2020-09-24 18:23:51,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:51,364 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 833 transitions. [2020-09-24 18:23:51,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:23:51,364 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 833 transitions. [2020-09-24 18:23:51,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-24 18:23:51,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:51,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:23:51,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:23:51,374 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:51,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:51,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1872606423, now seen corresponding path program 1 times [2020-09-24 18:23:51,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:51,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518978631] [2020-09-24 18:23:51,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:51,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:51,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:52,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:52,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:53,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:55,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:56,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:56,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 18:23:56,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:23:56,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 18:23:56,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:56,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:56,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:23:56,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 18:23:56,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:56,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:56,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:56,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:56,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:56,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:56,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:23:56,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:56,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:56,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:23:56,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:56,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:56,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:56,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:56,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 18:23:56,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:56,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 18:23:56,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:56,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:56,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:23:56,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:56,758 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:56,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518978631] [2020-09-24 18:23:56,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:56,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:23:56,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944495109] [2020-09-24 18:23:56,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:56,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:56,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:56,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:56,761 INFO L87 Difference]: Start difference. First operand 702 states and 833 transitions. Second operand 7 states. [2020-09-24 18:23:58,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:58,933 INFO L93 Difference]: Finished difference Result 1856 states and 2279 transitions. [2020-09-24 18:23:58,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:23:58,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-09-24 18:23:58,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:58,943 INFO L225 Difference]: With dead ends: 1856 [2020-09-24 18:23:58,943 INFO L226 Difference]: Without dead ends: 1176 [2020-09-24 18:23:58,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 18:23:58,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2020-09-24 18:23:58,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1115. [2020-09-24 18:23:58,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1115 states. [2020-09-24 18:23:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1345 transitions. [2020-09-24 18:23:58,990 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1345 transitions. Word has length 162 [2020-09-24 18:23:58,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:58,990 INFO L479 AbstractCegarLoop]: Abstraction has 1115 states and 1345 transitions. [2020-09-24 18:23:58,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:23:58,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1345 transitions. [2020-09-24 18:23:58,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 18:23:58,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:58,996 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:23:58,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:23:58,996 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:58,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:58,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1343420525, now seen corresponding path program 1 times [2020-09-24 18:23:58,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:58,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180001613] [2020-09-24 18:23:58,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:59,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:59,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:59,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:00,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:00,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:04,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:04,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 18:24:04,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:24:04,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 18:24:04,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:04,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:24:04,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:24:04,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 18:24:04,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:04,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:04,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:04,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:04,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:04,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:04,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:24:04,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:04,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:04,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:04,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:24:04,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:04,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:04,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:04,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:04,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:24:04,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:04,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 18:24:04,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:04,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:04,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:04,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:24:04,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:04,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180001613] [2020-09-24 18:24:04,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:24:04,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:24:04,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782839211] [2020-09-24 18:24:04,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:04,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:04,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:04,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:04,322 INFO L87 Difference]: Start difference. First operand 1115 states and 1345 transitions. Second operand 7 states. [2020-09-24 18:24:06,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:06,355 INFO L93 Difference]: Finished difference Result 2910 states and 3636 transitions. [2020-09-24 18:24:06,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:24:06,356 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-09-24 18:24:06,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:06,366 INFO L225 Difference]: With dead ends: 2910 [2020-09-24 18:24:06,366 INFO L226 Difference]: Without dead ends: 1817 [2020-09-24 18:24:06,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:24:06,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2020-09-24 18:24:06,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1767. [2020-09-24 18:24:06,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-09-24 18:24:06,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2047 transitions. [2020-09-24 18:24:06,432 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2047 transitions. Word has length 165 [2020-09-24 18:24:06,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:06,432 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 2047 transitions. [2020-09-24 18:24:06,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:06,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2047 transitions. [2020-09-24 18:24:06,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-24 18:24:06,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:06,440 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:06,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:24:06,441 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:06,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:06,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1385739740, now seen corresponding path program 1 times [2020-09-24 18:24:06,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:06,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519497282] [2020-09-24 18:24:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:06,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:06,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:06,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:06,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:06,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:08,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:09,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:11,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:11,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-24 18:24:11,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:24:11,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:24:11,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:11,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:11,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-24 18:24:11,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 18:24:11,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:11,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:11,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:11,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:11,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:11,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:11,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:24:11,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:11,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:11,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:11,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:11,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:11,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:11,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:11,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:11,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:24:11,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:11,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:24:11,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:11,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:11,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:11,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:24:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:11,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:11,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:11,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:24:11,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:11,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:24:11,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:11,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:11,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:11,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:24:11,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:11,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-24 18:24:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:11,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:11,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:11,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 18:24:11,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:11,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 18:24:11,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:11,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:11,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 18:24:11,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:11,809 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 18:24:11,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519497282] [2020-09-24 18:24:11,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:11,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:11,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827337507] [2020-09-24 18:24:11,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:11,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:11,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:11,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:11,812 INFO L87 Difference]: Start difference. First operand 1767 states and 2047 transitions. Second operand 7 states. [2020-09-24 18:24:15,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:15,036 INFO L93 Difference]: Finished difference Result 5691 states and 6842 transitions. [2020-09-24 18:24:15,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:24:15,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-09-24 18:24:15,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:15,056 INFO L225 Difference]: With dead ends: 5691 [2020-09-24 18:24:15,056 INFO L226 Difference]: Without dead ends: 3752 [2020-09-24 18:24:15,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 18:24:15,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2020-09-24 18:24:15,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 3533. [2020-09-24 18:24:15,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3533 states. [2020-09-24 18:24:15,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 4169 transitions. [2020-09-24 18:24:15,161 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 4169 transitions. Word has length 206 [2020-09-24 18:24:15,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:15,162 INFO L479 AbstractCegarLoop]: Abstraction has 3533 states and 4169 transitions. [2020-09-24 18:24:15,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:15,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 4169 transitions. [2020-09-24 18:24:15,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-24 18:24:15,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:15,175 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:15,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:24:15,176 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:15,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:15,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1784063193, now seen corresponding path program 1 times [2020-09-24 18:24:15,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:15,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290141122] [2020-09-24 18:24:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:15,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:15,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:15,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:15,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:20,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:20,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-24 18:24:20,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:24:20,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 18:24:20,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:20,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:20,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-24 18:24:20,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:24:20,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:20,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:20,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:20,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:20,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:24:20,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:20,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:24:20,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:20,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:20,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:20,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:20,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:20,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:24:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:20,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:20,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:20,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:24:20,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:20,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:24:20,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:20,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:20,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:20,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:20,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:20,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:24:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:20,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:20,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:20,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:24:20,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:20,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 18:24:20,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:20,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:20,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:20,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:24:20,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:20,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 18:24:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:20,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking...