/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=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:27:26,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:27:26,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:27:26,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:27:26,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:27:26,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:27:26,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:27:26,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:27:26,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:27:26,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:27:26,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:27:26,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:27:26,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:27:26,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:27:26,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:27:26,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:27:26,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:27:26,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:27:26,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:27:26,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:27:26,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:27:26,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:27:26,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:27:26,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:27:26,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:27:26,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:27:26,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:27:26,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:27:26,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:27:26,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:27:26,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:27:26,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:27:26,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:27:26,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:27:26,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:27:26,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:27:26,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:27:26,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:27:26,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:27:26,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:27:26,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:27:26,265 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 12:27:26,314 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:27:26,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:27:26,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:27:26,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:27:26,317 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:27:26,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:27:26,318 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:27:26,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:27:26,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:27:26,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:27:26,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:27:26,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:27:26,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:27:26,321 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:27:26,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:27:26,321 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:27:26,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:27:26,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:27:26,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:27:26,322 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:27:26,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:27:26,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:27:26,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:27:26,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:27:26,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:27:26,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:27:26,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:27:26,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:27:26,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:27:26,324 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:27:26,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:27:26,797 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:27:26,802 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:27:26,804 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:27:26,804 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:27:26,805 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 12:27:26,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d99e69195/f7bf6c5a03624e15bd1c83f3f7ae9ec6/FLAGa6ff5a63d [2020-09-25 12:27:27,480 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:27:27,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 12:27:27,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d99e69195/f7bf6c5a03624e15bd1c83f3f7ae9ec6/FLAGa6ff5a63d [2020-09-25 12:27:27,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d99e69195/f7bf6c5a03624e15bd1c83f3f7ae9ec6 [2020-09-25 12:27:27,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:27:27,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:27:27,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:27,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:27:27,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:27:27,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:27" (1/1) ... [2020-09-25 12:27:27,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155d8a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:27, skipping insertion in model container [2020-09-25 12:27:27,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:27" (1/1) ... [2020-09-25 12:27:27,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:27:27,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:27:28,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:28,447 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:27:28,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:28,580 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:27:28,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:28 WrapperNode [2020-09-25 12:27:28,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:28,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:27:28,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:27:28,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:27:28,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:28" (1/1) ... [2020-09-25 12:27:28,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:28" (1/1) ... [2020-09-25 12:27:28,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:28" (1/1) ... [2020-09-25 12:27:28,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:28" (1/1) ... [2020-09-25 12:27:28,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:28" (1/1) ... [2020-09-25 12:27:28,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:28" (1/1) ... [2020-09-25 12:27:28,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:28" (1/1) ... [2020-09-25 12:27:28,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:27:28,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:27:28,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:27:28,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:27:28,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:28" (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 12:27:28,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:27:28,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:27:28,801 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:27:28,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:27:28,801 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:27:28,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:27:28,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:27:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:27:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:27:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:27:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:27:30,400 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:27:30,401 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:27:30,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:30 BoogieIcfgContainer [2020-09-25 12:27:30,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:27:30,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:27:30,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:27:30,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:27:30,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:27:27" (1/3) ... [2020-09-25 12:27:30,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c42298d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:30, skipping insertion in model container [2020-09-25 12:27:30,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:28" (2/3) ... [2020-09-25 12:27:30,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c42298d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:30, skipping insertion in model container [2020-09-25 12:27:30,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:30" (3/3) ... [2020-09-25 12:27:30,435 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2020-09-25 12:27:30,447 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:27:30,463 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:27:30,486 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:27:30,517 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:27:30,518 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:27:30,518 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:27:30,518 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:27:30,518 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:27:30,518 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:27:30,519 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:27:30,519 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:27:30,551 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:27:30,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 12:27:30,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:30,565 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] [2020-09-25 12:27:30,566 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:30,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:30,574 INFO L82 PathProgramCache]: Analyzing trace with hash 2145887279, now seen corresponding path program 1 times [2020-09-25 12:27:30,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:30,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816386142] [2020-09-25 12:27:30,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:30,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:31,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:31,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:31,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:31,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:31,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 945 [2020-09-25 12:27:31,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:31,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:31,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:31,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:27:31,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 12:27:31,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:27:31,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:31,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:31,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:31,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:31,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:31,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:27:31,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:31,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:27:31,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:31,921 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 12:27:31,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816386142] [2020-09-25 12:27:31,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:31,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:27:31,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099778666] [2020-09-25 12:27:31,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:27:31,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:31,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:27:31,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:27:31,959 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:27:33,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:33,851 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 12:27:33,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:27:33,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-09-25 12:27:33,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:33,877 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 12:27:33,877 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 12:27:33,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:27:33,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 12:27:33,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 12:27:33,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 12:27:33,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 12:27:33,987 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 76 [2020-09-25 12:27:33,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:33,988 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 12:27:33,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:27:33,989 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 12:27:33,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 12:27:33,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:33,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:33,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:27:33,999 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:33,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:33,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1884656088, now seen corresponding path program 1 times [2020-09-25 12:27:34,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:34,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8812809] [2020-09-25 12:27:34,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:34,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:34,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:34,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:34,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:34,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:36,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:36,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 12:27:36,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:27:36,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2853 [2020-09-25 12:27:36,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:36,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:36,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:27:36,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:27:36,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 12:27:36,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:36,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:37,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:37,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:37,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:37,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:37,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:27:37,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:37,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:27:37,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:37,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:37,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:37,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:37,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:37,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:27:37,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:37,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 12:27:37,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:37,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:37,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 12:27:37,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:27:37,498 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:27:37,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8812809] [2020-09-25 12:27:37,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:37,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:27:37,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8450413] [2020-09-25 12:27:37,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:27:37,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:37,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:27:37,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:27:37,507 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 6 states. [2020-09-25 12:27:39,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:39,339 INFO L93 Difference]: Finished difference Result 1437 states and 1858 transitions. [2020-09-25 12:27:39,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:27:39,340 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2020-09-25 12:27:39,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:39,347 INFO L225 Difference]: With dead ends: 1437 [2020-09-25 12:27:39,347 INFO L226 Difference]: Without dead ends: 909 [2020-09-25 12:27:39,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:27:39,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2020-09-25 12:27:39,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 859. [2020-09-25 12:27:39,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 859 states. [2020-09-25 12:27:39,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1029 transitions. [2020-09-25 12:27:39,408 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1029 transitions. Word has length 156 [2020-09-25 12:27:39,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:39,411 INFO L479 AbstractCegarLoop]: Abstraction has 859 states and 1029 transitions. [2020-09-25 12:27:39,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:27:39,412 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1029 transitions. [2020-09-25 12:27:39,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 12:27:39,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:39,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:39,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:27:39,419 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:39,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:39,422 INFO L82 PathProgramCache]: Analyzing trace with hash -430892963, now seen corresponding path program 1 times [2020-09-25 12:27:39,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:39,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003088979] [2020-09-25 12:27:39,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:39,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:39,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:39,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:40,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:41,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:42,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:44,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:44,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 12:27:44,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:27:44,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:27:44,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:44,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:44,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:44,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:44,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-09-25 12:27:44,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:44,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:44,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:44,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:44,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:44,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:44,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:27:44,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:44,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:44,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:44,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:44,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:44,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:44,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:44,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:44,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:44,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-09-25 12:27:44,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:44,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:44,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:44,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:44,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:44,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:45,138 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:45,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003088979] [2020-09-25 12:27:45,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:45,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:27:45,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343460412] [2020-09-25 12:27:45,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:27:45,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:45,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:27:45,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:27:45,141 INFO L87 Difference]: Start difference. First operand 859 states and 1029 transitions. Second operand 8 states. [2020-09-25 12:27:48,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:48,612 INFO L93 Difference]: Finished difference Result 2960 states and 3753 transitions. [2020-09-25 12:27:48,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:27:48,612 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 12:27:48,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:48,626 INFO L225 Difference]: With dead ends: 2960 [2020-09-25 12:27:48,627 INFO L226 Difference]: Without dead ends: 2116 [2020-09-25 12:27:48,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:27:48,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2020-09-25 12:27:48,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 1995. [2020-09-25 12:27:48,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2020-09-25 12:27:48,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2467 transitions. [2020-09-25 12:27:48,712 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2467 transitions. Word has length 165 [2020-09-25 12:27:48,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:48,713 INFO L479 AbstractCegarLoop]: Abstraction has 1995 states and 2467 transitions. [2020-09-25 12:27:48,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:27:48,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2467 transitions. [2020-09-25 12:27:48,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 12:27:48,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:48,721 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 12:27:48,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:27:48,722 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:48,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:48,723 INFO L82 PathProgramCache]: Analyzing trace with hash -892390744, now seen corresponding path program 1 times [2020-09-25 12:27:48,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:48,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447417901] [2020-09-25 12:27:48,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:48,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:49,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:49,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:49,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:50,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:51,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:52,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:52,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:52,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 12:27:52,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:27:52,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4063 [2020-09-25 12:27:52,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:52,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 12:27:52,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:52,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:52,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:52,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:52,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:52,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:52,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:27:52,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:52,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:52,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:52,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:52,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:52,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:52,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:52,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:53,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:53,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:53,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:27:53,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:53,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 12:27:53,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:53,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:27:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 12:27:53,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:53,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:27:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:53,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:53,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:53,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:27:53,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:53,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 12:27:53,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:53,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:53,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 12:27:53,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:27:53,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447417901] [2020-09-25 12:27:53,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:53,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:27:53,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737752557] [2020-09-25 12:27:53,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:27:53,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:53,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:27:53,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:27:53,461 INFO L87 Difference]: Start difference. First operand 1995 states and 2467 transitions. Second operand 10 states. [2020-09-25 12:27:58,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:58,637 INFO L93 Difference]: Finished difference Result 6131 states and 8132 transitions. [2020-09-25 12:27:58,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:27:58,638 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 235 [2020-09-25 12:27:58,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:58,664 INFO L225 Difference]: With dead ends: 6131 [2020-09-25 12:27:58,665 INFO L226 Difference]: Without dead ends: 4151 [2020-09-25 12:27:58,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:27:58,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2020-09-25 12:27:58,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 3724. [2020-09-25 12:27:58,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3724 states. [2020-09-25 12:27:58,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3724 states to 3724 states and 4842 transitions. [2020-09-25 12:27:58,814 INFO L78 Accepts]: Start accepts. Automaton has 3724 states and 4842 transitions. Word has length 235 [2020-09-25 12:27:58,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:58,815 INFO L479 AbstractCegarLoop]: Abstraction has 3724 states and 4842 transitions. [2020-09-25 12:27:58,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:27:58,816 INFO L276 IsEmpty]: Start isEmpty. Operand 3724 states and 4842 transitions. [2020-09-25 12:27:58,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 12:27:58,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:58,823 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:58,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:27:58,824 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:58,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:58,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1938914842, now seen corresponding path program 1 times [2020-09-25 12:27:58,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:58,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616658275] [2020-09-25 12:27:58,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:58,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:59,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:59,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:59,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:00,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:00,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:00,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:00,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:01,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:03,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:03,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-25 12:28:03,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:28:03,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:28:03,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:03,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:03,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:28:03,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 12:28:03,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:28:04,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:04,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:04,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:04,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:04,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:28:04,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:04,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:04,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:28:04,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:04,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:28:04,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:04,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:04,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:04,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:28:04,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:04,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 12:28:04,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:04,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 12:28:04,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:04,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 12:28:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:04,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:04,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:04,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:28:04,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:04,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-09-25 12:28:04,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:04,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:04,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:04,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:04,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 12:28:04,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 12:28:04,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616658275] [2020-09-25 12:28:04,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:04,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:28:04,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266522868] [2020-09-25 12:28:04,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:28:04,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:04,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:28:04,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:28:04,998 INFO L87 Difference]: Start difference. First operand 3724 states and 4842 transitions. Second operand 10 states. [2020-09-25 12:28:08,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:08,792 INFO L93 Difference]: Finished difference Result 7965 states and 10589 transitions. [2020-09-25 12:28:08,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:28:08,793 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 248 [2020-09-25 12:28:08,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:08,814 INFO L225 Difference]: With dead ends: 7965 [2020-09-25 12:28:08,814 INFO L226 Difference]: Without dead ends: 4368 [2020-09-25 12:28:08,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:28:08,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4368 states. [2020-09-25 12:28:08,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4368 to 3874. [2020-09-25 12:28:08,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3874 states. [2020-09-25 12:28:08,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 4965 transitions. [2020-09-25 12:28:08,927 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 4965 transitions. Word has length 248 [2020-09-25 12:28:08,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:08,928 INFO L479 AbstractCegarLoop]: Abstraction has 3874 states and 4965 transitions. [2020-09-25 12:28:08,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:28:08,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 4965 transitions. [2020-09-25 12:28:08,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-25 12:28:08,935 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:08,936 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 12:28:08,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:28:08,936 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:08,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:08,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1668169033, now seen corresponding path program 1 times [2020-09-25 12:28:08,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:08,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892760339] [2020-09-25 12:28:08,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:09,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:09,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:09,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:09,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:10,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:11,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:11,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:12,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:12,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:12,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:14,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:14,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-25 12:28:14,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:28:14,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 12:28:14,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:14,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:28:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-09-25 12:28:14,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:14,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:14,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:14,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:14,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:14,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:14,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:28:14,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:14,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:14,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:28:14,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:14,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:28:14,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:14,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:14,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:14,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:14,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:14,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:28:14,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:14,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 12:28:14,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:14,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:14,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:28:14,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:14,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 12:28:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:14,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking...