/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=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:42:04,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:42:04,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:42:04,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:42:04,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:42:04,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:42:04,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:42:04,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:42:04,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:42:04,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:42:04,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:42:04,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:42:04,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:42:04,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:42:04,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:42:04,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:42:04,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:42:04,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:42:04,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:42:04,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:42:04,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:42:04,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:42:04,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:42:04,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:42:04,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:42:04,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:42:04,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:42:04,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:42:04,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:42:04,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:42:04,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:42:04,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:42:04,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:42:04,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:42:04,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:42:04,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:42:04,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:42:04,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:42:04,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:42:04,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:42:04,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:42:04,471 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 14:42:04,523 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:42:04,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:42:04,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:42:04,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:42:04,527 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:42:04,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:42:04,528 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:42:04,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:42:04,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:42:04,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:42:04,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:42:04,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:42:04,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:42:04,530 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:42:04,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:42:04,531 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:42:04,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:42:04,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:42:04,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:42:04,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:42:04,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:42:04,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:42:04,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:42:04,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:42:04,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:42:04,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:42:04,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:42:04,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:42:04,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:42:04,534 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:42:05,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:42:05,034 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:42:05,039 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:42:05,041 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:42:05,041 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:42:05,042 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 14:42:05,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0bf837882/b4cf97c3ee4a43a7989af97c4287d46a/FLAG0477fc5d3 [2020-09-25 14:42:05,824 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:42:05,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 14:42:05,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0bf837882/b4cf97c3ee4a43a7989af97c4287d46a/FLAG0477fc5d3 [2020-09-25 14:42:06,015 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0bf837882/b4cf97c3ee4a43a7989af97c4287d46a [2020-09-25 14:42:06,031 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:42:06,039 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:42:06,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:06,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:42:06,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:42:06,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:06" (1/1) ... [2020-09-25 14:42:06,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:06, skipping insertion in model container [2020-09-25 14:42:06,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:06" (1/1) ... [2020-09-25 14:42:06,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:42:06,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:42:06,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:06,623 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:42:06,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:06,883 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:42:06,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:06 WrapperNode [2020-09-25 14:42:06,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:06,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:42:06,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:42:06,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:42:06,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:06" (1/1) ... [2020-09-25 14:42:06,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:06" (1/1) ... [2020-09-25 14:42:06,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:06" (1/1) ... [2020-09-25 14:42:06,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:06" (1/1) ... [2020-09-25 14:42:06,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:06" (1/1) ... [2020-09-25 14:42:06,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:06" (1/1) ... [2020-09-25 14:42:06,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:06" (1/1) ... [2020-09-25 14:42:07,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:42:07,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:42:07,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:42:07,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:42:07,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:42:07,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:42:07,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:42:07,115 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:42:07,115 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:42:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:42:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:42:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:42:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:42:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:42:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:42:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:42:08,666 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:42:08,666 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:42:08,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:08 BoogieIcfgContainer [2020-09-25 14:42:08,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:42:08,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:42:08,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:42:08,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:42:08,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:42:06" (1/3) ... [2020-09-25 14:42:08,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:08, skipping insertion in model container [2020-09-25 14:42:08,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:06" (2/3) ... [2020-09-25 14:42:08,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:08, skipping insertion in model container [2020-09-25 14:42:08,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:08" (3/3) ... [2020-09-25 14:42:08,688 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label30.c [2020-09-25 14:42:08,704 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:42:08,718 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:42:08,747 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:42:08,790 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:42:08,791 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:42:08,791 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:42:08,791 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:42:08,791 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:42:08,791 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:42:08,792 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:42:08,792 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:42:08,837 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:42:08,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 14:42:08,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:08,852 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] [2020-09-25 14:42:08,853 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:08,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:08,861 INFO L82 PathProgramCache]: Analyzing trace with hash -985821505, now seen corresponding path program 1 times [2020-09-25 14:42:08,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:08,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-25 14:42:08,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:09,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:09,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:09,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:09,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:09,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 14:42:09,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:42:09,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-09-25 14:42:09,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:09,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:09,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:09,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:42:09,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 14:42:09,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:42:10,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:10,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:10,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:10,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:10,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:10,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:42:10,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:10,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:42:10,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:10,197 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 14:42:10,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-25 14:42:10,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:10,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:42:10,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307019371] [2020-09-25 14:42:10,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:42:10,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:10,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:42:10,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:42:10,237 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:42:12,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:12,414 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 14:42:12,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:42:12,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-25 14:42:12,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:12,455 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 14:42:12,456 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 14:42:12,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:42:12,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 14:42:12,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 14:42:12,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 14:42:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 14:42:12,563 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 53 [2020-09-25 14:42:12,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:12,564 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 14:42:12,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:42:12,564 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 14:42:12,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 14:42:12,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:12,572 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:12,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:42:12,572 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:12,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:12,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1694818480, now seen corresponding path program 1 times [2020-09-25 14:42:12,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:12,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513765918] [2020-09-25 14:42:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:12,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:12,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:12,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:13,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:13,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:13,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:17,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:17,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 14:42:17,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:42:17,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 14:42:17,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:17,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:17,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:42:17,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:42:17,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 14:42:17,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:17,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:17,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:17,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:17,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:17,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:17,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:42:17,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:17,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:17,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:17,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:17,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:42:17,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:17,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:17,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:17,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:17,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:17,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:17,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:17,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 14:42:17,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:17,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:17,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:17,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:17,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:42:17,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:18,044 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:42:18,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513765918] [2020-09-25 14:42:18,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:18,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:42:18,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890225080] [2020-09-25 14:42:18,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:42:18,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:18,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:42:18,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:42:18,049 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 14:42:19,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:19,790 INFO L93 Difference]: Finished difference Result 1389 states and 1702 transitions. [2020-09-25 14:42:19,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:42:19,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 14:42:19,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:19,800 INFO L225 Difference]: With dead ends: 1389 [2020-09-25 14:42:19,800 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 14:42:19,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:42:19,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 14:42:19,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 849. [2020-09-25 14:42:19,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-25 14:42:19,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1017 transitions. [2020-09-25 14:42:19,854 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1017 transitions. Word has length 132 [2020-09-25 14:42:19,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:19,855 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1017 transitions. [2020-09-25 14:42:19,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:42:19,855 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1017 transitions. [2020-09-25 14:42:19,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 14:42:19,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:19,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:19,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:42:19,860 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:19,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:19,860 INFO L82 PathProgramCache]: Analyzing trace with hash 550197362, now seen corresponding path program 1 times [2020-09-25 14:42:19,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:19,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122968337] [2020-09-25 14:42:19,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:19,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:20,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:20,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:20,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:20,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:22,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:22,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 14:42:22,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:42:22,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2511 [2020-09-25 14:42:22,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:22,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:22,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:42:22,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:42:22,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 14:42:22,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:22,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:22,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:22,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:22,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:22,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:22,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 14:42:22,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:22,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:22,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:22,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:22,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:42:22,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:22,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:22,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:22,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:22,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:22,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:22,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 14:42:22,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:22,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:42:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:22,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:42:22,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:22,967 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:22,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122968337] [2020-09-25 14:42:22,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:22,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 14:42:22,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156482009] [2020-09-25 14:42:22,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 14:42:22,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:22,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 14:42:22,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:42:22,971 INFO L87 Difference]: Start difference. First operand 849 states and 1017 transitions. Second operand 12 states. [2020-09-25 14:42:27,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:27,084 INFO L93 Difference]: Finished difference Result 3131 states and 3961 transitions. [2020-09-25 14:42:27,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 14:42:27,085 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 142 [2020-09-25 14:42:27,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:27,102 INFO L225 Difference]: With dead ends: 3131 [2020-09-25 14:42:27,102 INFO L226 Difference]: Without dead ends: 2254 [2020-09-25 14:42:27,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-09-25 14:42:27,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2020-09-25 14:42:27,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 1709. [2020-09-25 14:42:27,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1709 states. [2020-09-25 14:42:27,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2134 transitions. [2020-09-25 14:42:27,191 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2134 transitions. Word has length 142 [2020-09-25 14:42:27,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:27,198 INFO L479 AbstractCegarLoop]: Abstraction has 1709 states and 2134 transitions. [2020-09-25 14:42:27,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 14:42:27,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2134 transitions. [2020-09-25 14:42:27,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 14:42:27,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:27,214 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:42:27,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:42:27,214 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:27,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:27,216 INFO L82 PathProgramCache]: Analyzing trace with hash 99423878, now seen corresponding path program 1 times [2020-09-25 14:42:27,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:27,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28377756] [2020-09-25 14:42:27,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:27,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:27,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:27,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:28,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:28,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:30,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:30,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:31,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:31,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 14:42:31,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:42:31,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4254 [2020-09-25 14:42:31,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:31,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:42:31,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 14:42:31,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 14:42:31,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:31,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:31,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:31,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:31,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:31,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:31,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:42:31,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:31,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:31,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:31,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:31,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:31,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:31,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:31,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:31,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:31,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 14:42:31,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:31,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:31,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:42:31,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:31,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 14:42:31,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:31,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:42:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:31,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:31,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:31,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:31,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:42:31,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:31,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 14:42:31,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:31,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:31,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:31,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:31,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:42:31,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:32,082 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 106 proven. 33 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:42:32,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28377756] [2020-09-25 14:42:32,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:32,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:42:32,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465114724] [2020-09-25 14:42:32,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:32,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:32,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:32,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:32,089 INFO L87 Difference]: Start difference. First operand 1709 states and 2134 transitions. Second operand 7 states. [2020-09-25 14:42:34,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:34,889 INFO L93 Difference]: Finished difference Result 5002 states and 6552 transitions. [2020-09-25 14:42:34,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:42:34,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-09-25 14:42:34,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:34,914 INFO L225 Difference]: With dead ends: 5002 [2020-09-25 14:42:34,914 INFO L226 Difference]: Without dead ends: 3308 [2020-09-25 14:42:34,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:42:34,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2020-09-25 14:42:35,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 3102. [2020-09-25 14:42:35,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3102 states. [2020-09-25 14:42:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3102 states to 3102 states and 3967 transitions. [2020-09-25 14:42:35,029 INFO L78 Accepts]: Start accepts. Automaton has 3102 states and 3967 transitions. Word has length 212 [2020-09-25 14:42:35,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:35,030 INFO L479 AbstractCegarLoop]: Abstraction has 3102 states and 3967 transitions. [2020-09-25 14:42:35,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:35,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3102 states and 3967 transitions. [2020-09-25 14:42:35,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-25 14:42:35,036 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:35,036 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:42:35,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:42:35,037 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:35,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:35,037 INFO L82 PathProgramCache]: Analyzing trace with hash -596487218, now seen corresponding path program 1 times [2020-09-25 14:42:35,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:35,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860077809] [2020-09-25 14:42:35,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:35,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:35,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:36,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:36,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:37,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:37,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:38,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:40,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:40,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-09-25 14:42:40,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:42:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:42:40,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:40,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:42:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 14:42:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 14:42:40,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:40,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:40,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:40,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:40,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:40,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:40,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:42:40,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:40,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:40,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:40,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:40,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:40,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:40,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:40,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:40,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:40,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 14:42:40,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:40,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 14:42:40,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:40,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:40,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:42:40,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:40,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 14:42:40,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:40,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 14:42:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:40,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:40,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:40,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:40,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:40,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:40,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-09-25 14:42:40,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:40,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:40,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:40,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:40,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 14:42:40,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 14:42:41,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860077809] [2020-09-25 14:42:41,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:41,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:42:41,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766579218] [2020-09-25 14:42:41,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:42:41,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:41,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:42:41,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:42:41,085 INFO L87 Difference]: Start difference. First operand 3102 states and 3967 transitions. Second operand 10 states. [2020-09-25 14:42:47,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:47,202 INFO L93 Difference]: Finished difference Result 8799 states and 11662 transitions. [2020-09-25 14:42:47,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:42:47,205 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 228 [2020-09-25 14:42:47,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:47,234 INFO L225 Difference]: With dead ends: 8799 [2020-09-25 14:42:47,235 INFO L226 Difference]: Without dead ends: 5828 [2020-09-25 14:42:47,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:42:47,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5828 states. [2020-09-25 14:42:47,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5828 to 5405. [2020-09-25 14:42:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5405 states. [2020-09-25 14:42:47,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 6855 transitions. [2020-09-25 14:42:47,397 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 6855 transitions. Word has length 228 [2020-09-25 14:42:47,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:47,398 INFO L479 AbstractCegarLoop]: Abstraction has 5405 states and 6855 transitions. [2020-09-25 14:42:47,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:42:47,398 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 6855 transitions. [2020-09-25 14:42:47,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-09-25 14:42:47,409 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:47,410 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:42:47,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:42:47,410 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:47,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:47,411 INFO L82 PathProgramCache]: Analyzing trace with hash -2142390301, now seen corresponding path program 1 times [2020-09-25 14:42:47,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:47,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113967607] [2020-09-25 14:42:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:47,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:47,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:48,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:49,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:49,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:51,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:52,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:52,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-09-25 14:42:52,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:42:52,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 14:42:52,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:52,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:52,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:52,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 14:42:52,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 14:42:52,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:52,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:52,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:52,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:52,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:52,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:52,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:42:52,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:52,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:52,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:52,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:52,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:52,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:52,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:52,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:52,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 14:42:52,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:52,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 14:42:52,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:52,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:52,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:52,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:52,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:42:52,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:52,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 14:42:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:52,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:53,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:53,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 14:42:53,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:53,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-25 14:42:53,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:53,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:53,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 14:42:53,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:53,300 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:42:53,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113967607] [2020-09-25 14:42:53,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:53,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:42:53,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565078322] [2020-09-25 14:42:53,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:42:53,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:53,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:42:53,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:42:53,305 INFO L87 Difference]: Start difference. First operand 5405 states and 6855 transitions. Second operand 8 states.