/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:16:17,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:16:17,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:16:17,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:16:17,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:16:17,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:16:17,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:16:17,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:16:17,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:16:17,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:16:17,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:16:17,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:16:17,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:16:17,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:16:17,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:16:17,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:16:17,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:16:17,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:16:17,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:16:17,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:16:17,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:16:17,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:16:17,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:16:17,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:16:17,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:16:17,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:16:17,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:16:17,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:16:17,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:16:17,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:16:17,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:16:17,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:16:17,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:16:17,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:16:17,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:16:17,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:16:17,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:16:17,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:16:17,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:16:17,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:16:17,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:16:17,301 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:16:17,331 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:16:17,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:16:17,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:16:17,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:16:17,333 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:16:17,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:16:17,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:16:17,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:16:17,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:16:17,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:16:17,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:16:17,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:16:17,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:16:17,335 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:16:17,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:16:17,335 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:16:17,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:16:17,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:16:17,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:16:17,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:16:17,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:16:17,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:16:17,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:16:17,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:16:17,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:16:17,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:16:17,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:16:17,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:16:17,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:16:17,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:16:17,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:16:17,815 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:16:17,820 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:16:17,822 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:16:17,823 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:16:17,824 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label22.c [2020-09-25 11:16:17,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84512765c/883a1d3072bc4745bfe2874a5874e7e2/FLAGc2a4933f4 [2020-09-25 11:16:18,624 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:16:18,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label22.c [2020-09-25 11:16:18,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84512765c/883a1d3072bc4745bfe2874a5874e7e2/FLAGc2a4933f4 [2020-09-25 11:16:18,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84512765c/883a1d3072bc4745bfe2874a5874e7e2 [2020-09-25 11:16:18,883 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:16:18,888 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:16:18,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:16:18,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:16:18,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:16:18,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:16:18" (1/1) ... [2020-09-25 11:16:18,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67135101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:18, skipping insertion in model container [2020-09-25 11:16:18,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:16:18" (1/1) ... [2020-09-25 11:16:18,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:16:18,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:16:19,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:16:19,429 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:16:19,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:16:19,721 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:16:19,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:19 WrapperNode [2020-09-25 11:16:19,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:16:19,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:16:19,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:16:19,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:16:19,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:19" (1/1) ... [2020-09-25 11:16:19,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:19" (1/1) ... [2020-09-25 11:16:19,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:19" (1/1) ... [2020-09-25 11:16:19,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:19" (1/1) ... [2020-09-25 11:16:19,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:19" (1/1) ... [2020-09-25 11:16:19,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:19" (1/1) ... [2020-09-25 11:16:19,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:19" (1/1) ... [2020-09-25 11:16:19,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:16:19,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:16:19,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:16:19,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:16:19,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:16:19,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:16:19,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:16:19,932 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:16:19,932 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:16:19,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:16:19,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:16:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:16:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:16:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:16:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:16:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:16:21,335 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:16:21,336 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:16:21,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:16:21 BoogieIcfgContainer [2020-09-25 11:16:21,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:16:21,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:16:21,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:16:21,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:16:21,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:16:18" (1/3) ... [2020-09-25 11:16:21,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3937fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:16:21, skipping insertion in model container [2020-09-25 11:16:21,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:19" (2/3) ... [2020-09-25 11:16:21,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3937fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:16:21, skipping insertion in model container [2020-09-25 11:16:21,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:16:21" (3/3) ... [2020-09-25 11:16:21,358 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label22.c [2020-09-25 11:16:21,373 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:16:21,386 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:16:21,414 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:16:21,455 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:16:21,455 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:16:21,456 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:16:21,456 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:16:21,456 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:16:21,456 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:16:21,456 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:16:21,457 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:16:21,491 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:16:21,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 11:16:21,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:21,513 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] [2020-09-25 11:16:21,514 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:21,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:21,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1564262750, now seen corresponding path program 1 times [2020-09-25 11:16:21,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:21,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888407347] [2020-09-25 11:16:21,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:21,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:22,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:23,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:23,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:24,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:24,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:26,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:26,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:26,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:26,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 11:16:26,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:16:26,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:16:26,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:26,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:16:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:16:26,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 11:16:26,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:16:27,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:27,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:27,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:27,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:27,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:27,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 11:16:27,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:27,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:27,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:27,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:27,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:16:27,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:27,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:16:27,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888407347] [2020-09-25 11:16:27,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:16:27,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:16:27,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821324633] [2020-09-25 11:16:27,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:16:27,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:27,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:16:27,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:16:27,186 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:16:29,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:29,307 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 11:16:29,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:16:29,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-09-25 11:16:29,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:29,334 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 11:16:29,335 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 11:16:29,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:16:29,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 11:16:29,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 11:16:29,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 11:16:29,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 11:16:29,470 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 123 [2020-09-25 11:16:29,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:29,472 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 11:16:29,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:16:29,473 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 11:16:29,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 11:16:29,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:29,486 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:16:29,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:16:29,490 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:29,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:29,491 INFO L82 PathProgramCache]: Analyzing trace with hash -750015737, now seen corresponding path program 1 times [2020-09-25 11:16:29,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:29,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450018941] [2020-09-25 11:16:29,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:29,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:29,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:30,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:30,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:30,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:30,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:30,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:33,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:33,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 11:16:33,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:16:33,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3997 [2020-09-25 11:16:33,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:33,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:33,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:16:33,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 11:16:33,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 11:16:33,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:33,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:33,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:33,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:33,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:33,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:33,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:16:33,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:33,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:33,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:16:33,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:33,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:16:33,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:33,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:33,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:33,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:33,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:16:33,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:33,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 11:16:33,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:33,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:33,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:33,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:33,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:16:33,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:33,838 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:16:33,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450018941] [2020-09-25 11:16:33,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:33,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:16:33,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010879042] [2020-09-25 11:16:33,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:16:33,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:33,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:16:33,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:16:33,845 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 5 states. [2020-09-25 11:16:36,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:36,189 INFO L93 Difference]: Finished difference Result 1592 states and 2044 transitions. [2020-09-25 11:16:36,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:16:36,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-09-25 11:16:36,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:36,198 INFO L225 Difference]: With dead ends: 1592 [2020-09-25 11:16:36,198 INFO L226 Difference]: Without dead ends: 1001 [2020-09-25 11:16:36,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:16:36,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-09-25 11:16:36,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 801. [2020-09-25 11:16:36,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2020-09-25 11:16:36,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 979 transitions. [2020-09-25 11:16:36,240 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 979 transitions. Word has length 157 [2020-09-25 11:16:36,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:36,241 INFO L479 AbstractCegarLoop]: Abstraction has 801 states and 979 transitions. [2020-09-25 11:16:36,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:16:36,241 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 979 transitions. [2020-09-25 11:16:36,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 11:16:36,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:36,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:16:36,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:16:36,246 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:36,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:36,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1182522790, now seen corresponding path program 1 times [2020-09-25 11:16:36,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:36,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798674409] [2020-09-25 11:16:36,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:36,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:36,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:36,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:36,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:38,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:38,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:39,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:39,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:41,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:41,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 11:16:41,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:16:41,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 11:16:41,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:41,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:41,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:16:41,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:16:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 11:16:41,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:41,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:41,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:41,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:41,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:41,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:41,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 11:16:41,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:41,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:41,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:41,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:41,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:16:41,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:41,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:41,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:41,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:41,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:41,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:16:41,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:16:41,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 11:16:41,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:41,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:16:41,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:41,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:16:41,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:16:42,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798674409] [2020-09-25 11:16:42,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:42,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:16:42,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173693405] [2020-09-25 11:16:42,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:16:42,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:42,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:16:42,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:16:42,180 INFO L87 Difference]: Start difference. First operand 801 states and 979 transitions. Second operand 11 states. [2020-09-25 11:16:45,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:45,937 INFO L93 Difference]: Finished difference Result 2058 states and 2637 transitions. [2020-09-25 11:16:45,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:16:45,937 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 161 [2020-09-25 11:16:45,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:45,942 INFO L225 Difference]: With dead ends: 2058 [2020-09-25 11:16:45,942 INFO L226 Difference]: Without dead ends: 686 [2020-09-25 11:16:45,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:16:45,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-09-25 11:16:45,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 676. [2020-09-25 11:16:45,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2020-09-25 11:16:45,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 762 transitions. [2020-09-25 11:16:45,975 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 762 transitions. Word has length 161 [2020-09-25 11:16:45,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:45,976 INFO L479 AbstractCegarLoop]: Abstraction has 676 states and 762 transitions. [2020-09-25 11:16:45,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:16:45,976 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 762 transitions. [2020-09-25 11:16:45,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 11:16:45,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:45,980 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, 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] [2020-09-25 11:16:45,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:16:45,980 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:45,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:45,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1500049482, now seen corresponding path program 1 times [2020-09-25 11:16:45,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:45,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475957688] [2020-09-25 11:16:45,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:46,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:46,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:46,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:46,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:46,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:49,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:49,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:51,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:51,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 11:16:51,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:16:51,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:16:51,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:51,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:51,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:16:51,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:16:51,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-09-25 11:16:51,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:51,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:51,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:51,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:51,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:51,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:51,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:16:51,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:51,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:51,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:51,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:51,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:16:51,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:51,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:51,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:51,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:51,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:51,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 11:16:51,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:16:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-25 11:16:51,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:51,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:16:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 11:16:51,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:51,992 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:16:51,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475957688] [2020-09-25 11:16:51,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:16:51,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:16:51,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301547610] [2020-09-25 11:16:51,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:16:51,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:51,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:16:51,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:16:51,998 INFO L87 Difference]: Start difference. First operand 676 states and 762 transitions. Second operand 10 states. [2020-09-25 11:16:56,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:56,077 INFO L93 Difference]: Finished difference Result 2224 states and 2652 transitions. [2020-09-25 11:16:56,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:16:56,077 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 184 [2020-09-25 11:16:56,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:56,086 INFO L225 Difference]: With dead ends: 2224 [2020-09-25 11:16:56,086 INFO L226 Difference]: Without dead ends: 1314 [2020-09-25 11:16:56,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:16:56,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2020-09-25 11:16:56,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1132. [2020-09-25 11:16:56,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1132 states. [2020-09-25 11:16:56,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1240 transitions. [2020-09-25 11:16:56,129 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1240 transitions. Word has length 184 [2020-09-25 11:16:56,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:56,130 INFO L479 AbstractCegarLoop]: Abstraction has 1132 states and 1240 transitions. [2020-09-25 11:16:56,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:16:56,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1240 transitions. [2020-09-25 11:16:56,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-25 11:16:56,134 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:56,135 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:16:56,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:16:56,135 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:56,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:56,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1747648367, now seen corresponding path program 1 times [2020-09-25 11:16:56,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:56,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534810207] [2020-09-25 11:16:56,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:56,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:56,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:56,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:56,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:57,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:59,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:00,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:00,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:01,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:01,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-09-25 11:17:01,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:17:01,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:17:01,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:01,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:17:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:17:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-09-25 11:17:01,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:01,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:01,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:01,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:01,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:01,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:01,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 11:17:01,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:01,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:01,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:17:01,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:01,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:17:01,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:01,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:01,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:01,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:01,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:01,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 11:17:01,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:01,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-25 11:17:01,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:01,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:01,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:01,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:17:01,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 11:17:01,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:02,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534810207] [2020-09-25 11:17:02,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:02,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:17:02,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075715680] [2020-09-25 11:17:02,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:17:02,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:02,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:17:02,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:17:02,221 INFO L87 Difference]: Start difference. First operand 1132 states and 1240 transitions. Second operand 13 states.