/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=0.4 --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/Problem01_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:30:07,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:30:07,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:30:07,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:30:07,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:30:07,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:30:07,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:30:07,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:30:07,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:30:07,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:30:07,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:30:07,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:30:07,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:30:07,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:30:07,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:30:07,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:30:07,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:30:07,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:30:07,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:30:07,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:30:07,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:30:07,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:30:07,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:30:07,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:30:07,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:30:07,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:30:07,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:30:07,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:30:07,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:30:07,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:30:07,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:30:07,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:30:07,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:30:07,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:30:07,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:30:07,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:30:07,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:30:07,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:30:07,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:30:07,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:30:07,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:30:07,351 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 13:30:07,379 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:30:07,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:30:07,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:30:07,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:30:07,381 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:30:07,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:30:07,381 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:30:07,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:30:07,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:30:07,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:30:07,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:30:07,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:30:07,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:30:07,383 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:30:07,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:30:07,383 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:30:07,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:30:07,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:30:07,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:30:07,384 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:30:07,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:30:07,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:30:07,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:30:07,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:30:07,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:30:07,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:30:07,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:30:07,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:30:07,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:30:07,386 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:30:07,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:30:07,906 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:30:07,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:30:07,914 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:30:07,915 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:30:07,917 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-25 13:30:08,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1290c585b/2c7f810784f44d6daf1fb88a766790be/FLAGcd5302678 [2020-09-25 13:30:08,672 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:30:08,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-25 13:30:08,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1290c585b/2c7f810784f44d6daf1fb88a766790be/FLAGcd5302678 [2020-09-25 13:30:08,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1290c585b/2c7f810784f44d6daf1fb88a766790be [2020-09-25 13:30:08,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:30:08,895 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:30:08,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:08,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:30:08,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:30:08,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:08" (1/1) ... [2020-09-25 13:30:08,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b64216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:08, skipping insertion in model container [2020-09-25 13:30:08,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:08" (1/1) ... [2020-09-25 13:30:08,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:30:08,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:30:09,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:09,617 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:30:09,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:09,794 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:30:09,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:09 WrapperNode [2020-09-25 13:30:09,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:09,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:30:09,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:30:09,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:30:09,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:09" (1/1) ... [2020-09-25 13:30:09,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:09" (1/1) ... [2020-09-25 13:30:09,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:09" (1/1) ... [2020-09-25 13:30:09,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:09" (1/1) ... [2020-09-25 13:30:09,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:09" (1/1) ... [2020-09-25 13:30:09,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:09" (1/1) ... [2020-09-25 13:30:09,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:09" (1/1) ... [2020-09-25 13:30:09,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:30:09,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:30:09,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:30:09,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:30:09,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:09" (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 13:30:10,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:30:10,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:30:10,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:30:10,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:30:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:30:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:30:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:30:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:30:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:30:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:30:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:30:11,369 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:30:11,369 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:30:11,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:11 BoogieIcfgContainer [2020-09-25 13:30:11,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:30:11,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:30:11,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:30:11,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:30:11,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:30:08" (1/3) ... [2020-09-25 13:30:11,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e629d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:11, skipping insertion in model container [2020-09-25 13:30:11,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:09" (2/3) ... [2020-09-25 13:30:11,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e629d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:11, skipping insertion in model container [2020-09-25 13:30:11,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:11" (3/3) ... [2020-09-25 13:30:11,389 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label54.c [2020-09-25 13:30:11,401 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:30:11,413 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:30:11,437 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:30:11,472 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:30:11,473 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:30:11,473 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:30:11,473 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:30:11,473 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:30:11,473 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:30:11,474 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:30:11,474 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:30:11,508 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:30:11,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 13:30:11,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:11,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:30:11,534 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:11,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:11,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1970187929, now seen corresponding path program 1 times [2020-09-25 13:30:11,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:11,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962224886] [2020-09-25 13:30:11,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:11,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:12,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:13,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:13,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:16,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:16,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:16,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:16,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 13:30:16,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:30:16,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 13:30:16,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:16,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:30:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:30:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 13:30:16,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 13:30:17,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:17,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:17,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:17,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:17,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:17,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:30:17,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:17,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:17,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:17,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:17,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:30:17,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:30:17,312 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 13:30:17,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962224886] [2020-09-25 13:30:17,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:30:17,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:30:17,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083858615] [2020-09-25 13:30:17,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:30:17,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:17,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:30:17,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:30:17,348 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 13:30:19,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:19,608 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 13:30:19,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:30:19,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-25 13:30:19,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:19,636 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 13:30:19,637 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 13:30:19,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:19,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 13:30:19,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 13:30:19,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 13:30:19,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 13:30:19,756 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 150 [2020-09-25 13:30:19,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:19,757 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 13:30:19,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:30:19,758 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 13:30:19,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 13:30:19,769 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:19,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:30:19,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:30:19,770 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:19,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:19,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1973679864, now seen corresponding path program 1 times [2020-09-25 13:30:19,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:19,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272766123] [2020-09-25 13:30:19,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:19,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:19,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:20,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:21,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:21,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:22,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:22,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:24,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:24,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 13:30:24,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:30:24,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 13:30:24,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:24,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:24,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:30:24,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 13:30:24,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 13:30:24,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:25,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:25,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:25,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:25,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:25,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:25,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:30:25,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:25,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:25,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:25,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:25,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:25,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:25,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:25,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:25,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:25,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:30:25,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:25,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 13:30:25,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:25,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:25,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:30:25,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:25,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:30:25,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:25,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272766123] [2020-09-25 13:30:25,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:25,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:30:25,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803537211] [2020-09-25 13:30:25,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:30:25,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:25,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:30:25,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:30:25,561 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 9 states. [2020-09-25 13:30:29,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:29,248 INFO L93 Difference]: Finished difference Result 1904 states and 2480 transitions. [2020-09-25 13:30:29,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:30:29,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-09-25 13:30:29,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:29,269 INFO L225 Difference]: With dead ends: 1904 [2020-09-25 13:30:29,270 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 13:30:29,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:30:29,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 13:30:29,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 876. [2020-09-25 13:30:29,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2020-09-25 13:30:29,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1014 transitions. [2020-09-25 13:30:29,354 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1014 transitions. Word has length 171 [2020-09-25 13:30:29,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:29,354 INFO L479 AbstractCegarLoop]: Abstraction has 876 states and 1014 transitions. [2020-09-25 13:30:29,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:30:29,355 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1014 transitions. [2020-09-25 13:30:29,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 13:30:29,364 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:29,365 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:30:29,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:30:29,365 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:29,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:29,366 INFO L82 PathProgramCache]: Analyzing trace with hash 276355023, now seen corresponding path program 1 times [2020-09-25 13:30:29,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:29,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147032388] [2020-09-25 13:30:29,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:29,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:29,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:29,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:30,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:30,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:30,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:30,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:30,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:30,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:31,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:33,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:33,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:34,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:34,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:34,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 13:30:34,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:30:34,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:30:34,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:34,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:34,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:34,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 13:30:34,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 13:30:34,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:34,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:34,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:34,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:34,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:34,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:34,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:30:34,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:34,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:34,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:34,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:34,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:34,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:34,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:30:34,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:34,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 13:30:34,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:34,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:30:34,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:34,803 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:34,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147032388] [2020-09-25 13:30:34,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:34,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:30:34,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474189363] [2020-09-25 13:30:34,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:30:34,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:34,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:30:34,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:30:34,807 INFO L87 Difference]: Start difference. First operand 876 states and 1014 transitions. Second operand 6 states. [2020-09-25 13:30:37,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:37,581 INFO L93 Difference]: Finished difference Result 2435 states and 2996 transitions. [2020-09-25 13:30:37,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:30:37,582 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2020-09-25 13:30:37,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:37,594 INFO L225 Difference]: With dead ends: 2435 [2020-09-25 13:30:37,595 INFO L226 Difference]: Without dead ends: 1583 [2020-09-25 13:30:37,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:30:37,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-09-25 13:30:37,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1450. [2020-09-25 13:30:37,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1450 states. [2020-09-25 13:30:37,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1759 transitions. [2020-09-25 13:30:37,663 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1759 transitions. Word has length 175 [2020-09-25 13:30:37,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:37,664 INFO L479 AbstractCegarLoop]: Abstraction has 1450 states and 1759 transitions. [2020-09-25 13:30:37,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:30:37,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1759 transitions. [2020-09-25 13:30:37,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 13:30:37,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:37,674 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:30:37,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:30:37,674 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:37,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:37,675 INFO L82 PathProgramCache]: Analyzing trace with hash 325158199, now seen corresponding path program 1 times [2020-09-25 13:30:37,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:37,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498302420] [2020-09-25 13:30:37,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:37,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:37,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:38,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:38,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:38,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:40,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:40,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:40,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:40,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:40,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:42,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:42,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:42,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:42,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 13:30:42,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 13:30:42,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 13:30:42,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:42,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:42,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:42,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 13:30:42,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 13:30:42,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:42,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:42,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:42,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:42,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:42,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:42,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:30:42,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:42,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:42,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:42,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:42,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:42,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:42,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:42,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:42,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:42,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 13:30:42,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:42,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:30:42,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:42,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:42,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:42,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:42,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:30:42,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:43,015 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:43,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498302420] [2020-09-25 13:30:43,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:43,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:30:43,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976529439] [2020-09-25 13:30:43,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:30:43,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:43,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:30:43,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:43,022 INFO L87 Difference]: Start difference. First operand 1450 states and 1759 transitions. Second operand 5 states. [2020-09-25 13:30:45,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:45,117 INFO L93 Difference]: Finished difference Result 3399 states and 4221 transitions. [2020-09-25 13:30:45,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:30:45,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-09-25 13:30:45,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:45,130 INFO L225 Difference]: With dead ends: 3399 [2020-09-25 13:30:45,130 INFO L226 Difference]: Without dead ends: 1973 [2020-09-25 13:30:45,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:30:45,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2020-09-25 13:30:45,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1758. [2020-09-25 13:30:45,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1758 states. [2020-09-25 13:30:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2127 transitions. [2020-09-25 13:30:45,209 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2127 transitions. Word has length 178 [2020-09-25 13:30:45,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:45,210 INFO L479 AbstractCegarLoop]: Abstraction has 1758 states and 2127 transitions. [2020-09-25 13:30:45,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:30:45,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2127 transitions. [2020-09-25 13:30:45,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 13:30:45,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:45,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:30:45,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:30:45,219 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:45,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:45,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1748485010, now seen corresponding path program 1 times [2020-09-25 13:30:45,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:45,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766787882] [2020-09-25 13:30:45,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:45,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:45,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:45,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:45,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:46,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:46,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:46,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:46,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:47,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:47,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:48,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:48,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:50,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:50,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 13:30:50,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 13:30:50,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:30:50,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:50,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:50,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:50,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 13:30:50,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 13:30:50,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:50,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:50,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:50,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:50,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:50,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:50,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:30:50,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:50,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:50,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:50,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:50,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:50,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:50,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:50,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:50,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 13:30:50,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:50,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 13:30:50,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:50,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:30:50,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:30:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:50,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766787882] [2020-09-25 13:30:50,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:50,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:30:50,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361459493] [2020-09-25 13:30:50,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:30:50,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:50,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:30:50,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:30:50,565 INFO L87 Difference]: Start difference. First operand 1758 states and 2127 transitions. Second operand 6 states. [2020-09-25 13:30:53,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:53,601 INFO L93 Difference]: Finished difference Result 5001 states and 6248 transitions. [2020-09-25 13:30:53,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:30:53,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 197 [2020-09-25 13:30:53,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:53,602 INFO L225 Difference]: With dead ends: 5001 [2020-09-25 13:30:53,602 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 13:30:53,619 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 [2020-09-25 13:30:53,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 13:30:53,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 13:30:53,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 13:30:53,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 13:30:53,620 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 197 [2020-09-25 13:30:53,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:53,621 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 13:30:53,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:30:53,621 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 13:30:53,621 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 13:30:53,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:30:53,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 13:30:54,602 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 26 [2020-09-25 13:30:54,789 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 26