/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/Problem01_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:13:41,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:13:41,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:13:41,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:13:41,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:13:41,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:13:41,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:13:41,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:13:41,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:13:41,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:13:41,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:13:41,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:13:41,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:13:41,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:13:41,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:13:41,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:13:41,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:13:41,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:13:41,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:13:41,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:13:41,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:13:41,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:13:41,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:13:41,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:13:41,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:13:41,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:13:41,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:13:41,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:13:41,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:13:41,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:13:41,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:13:41,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:13:41,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:13:41,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:13:41,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:13:41,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:13:41,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:13:41,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:13:41,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:13:41,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:13:41,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:13:41,309 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 11:13:41,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:13:41,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:13:41,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:13:41,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:13:41,371 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:13:41,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:13:41,371 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:13:41,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:13:41,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:13:41,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:13:41,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:13:41,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:13:41,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:13:41,373 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:13:41,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:13:41,373 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:13:41,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:13:41,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:13:41,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:13:41,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:13:41,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:13:41,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:13:41,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:13:41,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:13:41,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:13:41,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:13:41,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:13:41,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:13:41,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:13:41,376 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 11:13:41,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:13:41,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:13:41,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:13:41,890 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:13:41,891 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:13:41,892 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-09-25 11:13:41,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68a2c67aa/8b5ed0ac61bf4091a51ffe15bff1eb93/FLAGd608bd60d [2020-09-25 11:13:42,675 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:13:42,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-09-25 11:13:42,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68a2c67aa/8b5ed0ac61bf4091a51ffe15bff1eb93/FLAGd608bd60d [2020-09-25 11:13:42,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68a2c67aa/8b5ed0ac61bf4091a51ffe15bff1eb93 [2020-09-25 11:13:42,899 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:13:42,906 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:13:42,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:13:42,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:13:42,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:13:42,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:13:42" (1/1) ... [2020-09-25 11:13:42,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:42, skipping insertion in model container [2020-09-25 11:13:42,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:13:42" (1/1) ... [2020-09-25 11:13:42,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:13:42,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:13:43,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:13:43,485 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:13:43,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:13:43,742 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:13:43,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:43 WrapperNode [2020-09-25 11:13:43,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:13:43,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:13:43,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:13:43,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:13:43,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:43" (1/1) ... [2020-09-25 11:13:43,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:43" (1/1) ... [2020-09-25 11:13:43,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:43" (1/1) ... [2020-09-25 11:13:43,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:43" (1/1) ... [2020-09-25 11:13:43,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:43" (1/1) ... [2020-09-25 11:13:43,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:43" (1/1) ... [2020-09-25 11:13:43,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:43" (1/1) ... [2020-09-25 11:13:43,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:13:43,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:13:43,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:13:43,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:13:43,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:43" (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 11:13:43,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:13:43,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:13:43,937 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:13:43,937 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:13:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:13:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:13:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:13:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:13:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:13:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:13:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:13:45,284 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:13:45,285 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:13:45,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:13:45 BoogieIcfgContainer [2020-09-25 11:13:45,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:13:45,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:13:45,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:13:45,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:13:45,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:13:42" (1/3) ... [2020-09-25 11:13:45,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:13:45, skipping insertion in model container [2020-09-25 11:13:45,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:43" (2/3) ... [2020-09-25 11:13:45,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:13:45, skipping insertion in model container [2020-09-25 11:13:45,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:13:45" (3/3) ... [2020-09-25 11:13:45,305 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label19.c [2020-09-25 11:13:45,319 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:13:45,330 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:13:45,353 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:13:45,388 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:13:45,388 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:13:45,388 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:13:45,389 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:13:45,389 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:13:45,389 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:13:45,389 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:13:45,389 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:13:45,422 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 11:13:45,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 11:13:45,441 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:45,443 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] [2020-09-25 11:13:45,444 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:45,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:45,452 INFO L82 PathProgramCache]: Analyzing trace with hash 628562263, now seen corresponding path program 1 times [2020-09-25 11:13:45,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:45,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523682103] [2020-09-25 11:13:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:45,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:46,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:46,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:46,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:46,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:47,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:49,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:50,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:50,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:50,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 11:13:50,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:13:50,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 11:13:50,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:50,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:50,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:13:50,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:13:50,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 11:13:50,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:13:50,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:51,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:51,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:51,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:51,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:51,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 11:13:51,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:51,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:51,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:13:51,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:51,101 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 11:13:51,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523682103] [2020-09-25 11:13:51,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:13:51,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:13:51,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619835330] [2020-09-25 11:13:51,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:13:51,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:51,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:13:51,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:13:51,140 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 11:13:53,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:53,541 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 11:13:53,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:13:53,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-09-25 11:13:53,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:53,570 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 11:13:53,570 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 11:13:53,580 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 11:13:53,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 11:13:53,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 11:13:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 11:13:53,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 11:13:53,698 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 114 [2020-09-25 11:13:53,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:53,699 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 11:13:53,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:13:53,699 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 11:13:53,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 11:13:53,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:53,707 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:53,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:13:53,708 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:53,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:53,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1104563352, now seen corresponding path program 1 times [2020-09-25 11:13:53,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:53,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266694497] [2020-09-25 11:13:53,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:53,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:53,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:54,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:54,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:54,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:56,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:56,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 11:13:56,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:13:56,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2466 [2020-09-25 11:13:56,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:56,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:56,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:13:56,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 11:13:56,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 11:13:56,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:13:56,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:56,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:56,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:56,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:56,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:56,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:13:56,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:56,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:56,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:56,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:56,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:56,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:56,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:13:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:56,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:56,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:56,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:13:56,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:56,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:13:56,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:56,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:56,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:56,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:56,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:13:56,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:56,582 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:56,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266694497] [2020-09-25 11:13:56,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:56,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:13:56,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906975485] [2020-09-25 11:13:56,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:13:56,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:56,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:13:56,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:13:56,587 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 11:13:58,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:58,535 INFO L93 Difference]: Finished difference Result 1654 states and 2024 transitions. [2020-09-25 11:13:58,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:13:58,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 11:13:58,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:58,543 INFO L225 Difference]: With dead ends: 1654 [2020-09-25 11:13:58,544 INFO L226 Difference]: Without dead ends: 1014 [2020-09-25 11:13:58,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 11:13:58,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-09-25 11:13:58,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 950. [2020-09-25 11:13:58,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 11:13:58,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1142 transitions. [2020-09-25 11:13:58,587 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1142 transitions. Word has length 135 [2020-09-25 11:13:58,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:58,587 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1142 transitions. [2020-09-25 11:13:58,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:13:58,587 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1142 transitions. [2020-09-25 11:13:58,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 11:13:58,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:58,592 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:58,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:13:58,593 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:58,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:58,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1460590075, now seen corresponding path program 1 times [2020-09-25 11:13:58,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:58,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348940887] [2020-09-25 11:13:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:58,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:58,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:59,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:00,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:00,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:03,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:03,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:03,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:03,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 11:14:03,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:14:03,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 11:14:03,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:03,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:03,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:03,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 11:14:03,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-25 11:14:03,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:03,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:03,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:03,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:03,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:03,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:03,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:14:03,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:03,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:03,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:03,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:03,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:03,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:03,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:03,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:03,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:03,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:14:03,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:03,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:14:03,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:03,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:03,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:03,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:03,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:03,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:03,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 11:14:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:03,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:03,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:03,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:14:03,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:03,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:14:03,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:03,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:03,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:03,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:03,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:14:03,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:03,888 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 11:14:03,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348940887] [2020-09-25 11:14:03,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:03,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:14:03,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355637285] [2020-09-25 11:14:03,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:14:03,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:03,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:14:03,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:14:03,904 INFO L87 Difference]: Start difference. First operand 950 states and 1142 transitions. Second operand 5 states. [2020-09-25 11:14:05,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:05,751 INFO L93 Difference]: Finished difference Result 2551 states and 3165 transitions. [2020-09-25 11:14:05,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:14:05,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-25 11:14:05,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:05,762 INFO L225 Difference]: With dead ends: 2551 [2020-09-25 11:14:05,763 INFO L226 Difference]: Without dead ends: 1625 [2020-09-25 11:14:05,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 11:14:05,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2020-09-25 11:14:05,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1238. [2020-09-25 11:14:05,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1238 states. [2020-09-25 11:14:05,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1551 transitions. [2020-09-25 11:14:05,812 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1551 transitions. Word has length 152 [2020-09-25 11:14:05,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:05,813 INFO L479 AbstractCegarLoop]: Abstraction has 1238 states and 1551 transitions. [2020-09-25 11:14:05,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:14:05,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1551 transitions. [2020-09-25 11:14:05,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 11:14:05,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:05,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:05,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:14:05,820 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:05,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:05,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1826040530, now seen corresponding path program 1 times [2020-09-25 11:14:05,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:05,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879075150] [2020-09-25 11:14:05,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:05,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:05,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:07,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:07,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:07,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:08,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:10,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:10,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 11:14:10,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:14:10,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 11:14:10,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:10,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:10,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:14:10,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:14:10,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-25 11:14:10,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:10,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:10,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:10,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:10,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:10,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:10,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:14:10,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:10,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:10,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:10,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:14:10,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:14:11,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:11,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:11,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:11,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:11,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:14:11,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:14:11,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 11:14:11,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:11,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:11,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:11,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:14:11,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:14:11,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:11,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 11:14:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:11,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:11,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:11,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 11:14:11,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:11,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 11:14:11,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:11,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:11,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:11,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:14:11,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:14:11,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:14:11,427 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 11:14:11,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879075150] [2020-09-25 11:14:11,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:11,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:14:11,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109814735] [2020-09-25 11:14:11,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:14:11,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:11,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:14:11,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:14:11,434 INFO L87 Difference]: Start difference. First operand 1238 states and 1551 transitions. Second operand 7 states. [2020-09-25 11:14:13,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:13,551 INFO L93 Difference]: Finished difference Result 3428 states and 4457 transitions. [2020-09-25 11:14:13,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:14:13,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-09-25 11:14:13,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:13,565 INFO L225 Difference]: With dead ends: 3428 [2020-09-25 11:14:13,566 INFO L226 Difference]: Without dead ends: 2214 [2020-09-25 11:14:13,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:14:13,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2020-09-25 11:14:13,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 2112. [2020-09-25 11:14:13,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2112 states. [2020-09-25 11:14:13,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2708 transitions. [2020-09-25 11:14:13,638 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2708 transitions. Word has length 196 [2020-09-25 11:14:13,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:13,638 INFO L479 AbstractCegarLoop]: Abstraction has 2112 states and 2708 transitions. [2020-09-25 11:14:13,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:14:13,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2708 transitions. [2020-09-25 11:14:13,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 11:14:13,649 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:13,650 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, 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] [2020-09-25 11:14:13,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:14:13,650 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:13,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:13,651 INFO L82 PathProgramCache]: Analyzing trace with hash -513686346, now seen corresponding path program 1 times [2020-09-25 11:14:13,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:13,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491596804] [2020-09-25 11:14:13,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:13,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:13,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:13,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:14,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:14,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:14,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:14,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:15,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:16,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:18,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:18,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 11:14:18,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:14:18,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 11:14:18,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:18,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:18,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:18,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 11:14:18,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:14:18,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:18,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:18,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:18,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:18,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:18,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:18,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:14:18,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:18,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:18,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:18,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:18,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:18,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:18,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:18,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:18,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:18,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 11:14:18,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:18,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 11:14:18,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:18,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:18,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:18,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 11:14:18,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:18,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-25 11:14:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:18,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:19,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:19,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 11:14:19,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:19,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 11:14:19,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:19,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:19,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:19,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:14:19,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:14:19,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:19,182 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:14:19,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491596804] [2020-09-25 11:14:19,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:19,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:14:19,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833948648] [2020-09-25 11:14:19,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:14:19,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:19,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:14:19,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:14:19,185 INFO L87 Difference]: Start difference. First operand 2112 states and 2708 transitions. Second operand 7 states. [2020-09-25 11:14:21,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:21,738 INFO L93 Difference]: Finished difference Result 5449 states and 7139 transitions. [2020-09-25 11:14:21,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:14:21,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-09-25 11:14:21,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:21,758 INFO L225 Difference]: With dead ends: 5449 [2020-09-25 11:14:21,759 INFO L226 Difference]: Without dead ends: 3361 [2020-09-25 11:14:21,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:14:21,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3361 states. [2020-09-25 11:14:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3361 to 2706. [2020-09-25 11:14:21,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2706 states. [2020-09-25 11:14:21,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 3517 transitions. [2020-09-25 11:14:21,876 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 3517 transitions. Word has length 222 [2020-09-25 11:14:21,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:21,877 INFO L479 AbstractCegarLoop]: Abstraction has 2706 states and 3517 transitions. [2020-09-25 11:14:21,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:14:21,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 3517 transitions. [2020-09-25 11:14:21,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-25 11:14:21,892 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:21,892 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:21,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:14:21,892 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:21,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:21,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1636213025, now seen corresponding path program 1 times [2020-09-25 11:14:21,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:21,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413590439] [2020-09-25 11:14:21,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:21,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:22,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:22,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:22,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:22,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:22,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:26,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:26,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 11:14:26,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:14:26,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 11:14:26,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:26,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:26,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:26,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-25 11:14:26,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 11:14:26,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:14:27,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:27,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:27,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:27,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:27,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:27,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:14:27,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:27,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:27,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:27,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:27,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:27,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:14:27,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:27,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:27,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:27,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:14:27,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:27,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:14:27,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:27,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:27,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:27,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:27,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:27,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:14:27,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 11:14:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:27,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:27,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:27,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:14:27,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:27,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 11:14:27,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:27,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:27,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:27,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:27,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:14:27,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:14:27,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 11:14:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:27,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:27,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:27,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 11:14:27,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:27,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 11:14:27,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:27,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:14:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:14:27,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:14:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 11:14:27,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413590439] [2020-09-25 11:14:27,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:27,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:14:27,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366190343] [2020-09-25 11:14:27,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:14:27,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:27,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:14:27,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:14:27,326 INFO L87 Difference]: Start difference. First operand 2706 states and 3517 transitions. Second operand 7 states. [2020-09-25 11:14:30,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:30,773 INFO L93 Difference]: Finished difference Result 6308 states and 8496 transitions. [2020-09-25 11:14:30,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:14:30,774 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-09-25 11:14:30,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:30,796 INFO L225 Difference]: With dead ends: 6308 [2020-09-25 11:14:30,796 INFO L226 Difference]: Without dead ends: 3626 [2020-09-25 11:14:30,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:14:30,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3626 states. [2020-09-25 11:14:30,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3626 to 3573. [2020-09-25 11:14:30,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3573 states. [2020-09-25 11:14:30,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 4582 transitions. [2020-09-25 11:14:30,949 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 4582 transitions. Word has length 233 [2020-09-25 11:14:30,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:30,949 INFO L479 AbstractCegarLoop]: Abstraction has 3573 states and 4582 transitions. [2020-09-25 11:14:30,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:14:30,949 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 4582 transitions. [2020-09-25 11:14:30,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-25 11:14:30,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:30,969 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:30,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:14:30,969 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:30,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:30,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1928288790, now seen corresponding path program 1 times [2020-09-25 11:14:30,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:30,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544714880] [2020-09-25 11:14:30,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:31,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:31,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:31,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:32,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:32,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking...