/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=WIDESTAMONGSMALL --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/Problem10_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:29:43,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:29:43,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:29:43,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:29:43,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:29:43,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:29:43,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:29:43,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:29:43,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:29:43,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:29:43,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:29:43,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:29:43,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:29:43,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:29:43,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:29:43,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:29:43,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:29:43,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:29:43,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:29:43,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:29:43,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:29:43,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:29:43,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:29:43,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:29:43,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:29:43,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:29:43,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:29:43,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:29:43,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:29:43,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:29:43,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:29:43,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:29:43,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:29:43,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:29:43,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:29:43,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:29:43,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:29:43,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:29:43,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:29:43,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:29:43,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:29:43,283 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 04:29:43,332 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:29:43,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:29:43,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:29:43,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:29:43,335 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:29:43,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:29:43,336 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:29:43,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:29:43,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:29:43,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:29:43,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:29:43,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:29:43,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:29:43,339 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:29:43,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:29:43,339 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:29:43,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:29:43,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:29:43,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:29:43,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:29:43,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:29:43,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:29:43,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:29:43,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:29:43,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:29:43,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:29:43,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:29:43,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:29:43,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:29:43,342 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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:29:43,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:29:43,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:29:43,832 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:29:43,834 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:29:43,835 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:29:43,836 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-25 04:29:43,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efde6eed2/d539d71005cc4ab78364d7d75eb8dd0f/FLAG06239e87b [2020-09-25 04:29:44,615 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:29:44,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-25 04:29:44,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efde6eed2/d539d71005cc4ab78364d7d75eb8dd0f/FLAG06239e87b [2020-09-25 04:29:44,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efde6eed2/d539d71005cc4ab78364d7d75eb8dd0f [2020-09-25 04:29:44,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:29:44,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:29:44,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:44,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:29:44,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:29:44,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:44" (1/1) ... [2020-09-25 04:29:44,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1487e564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:44, skipping insertion in model container [2020-09-25 04:29:44,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:44" (1/1) ... [2020-09-25 04:29:44,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:29:44,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:29:45,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:45,604 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:29:45,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:45,774 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:29:45,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:45 WrapperNode [2020-09-25 04:29:45,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:45,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:29:45,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:29:45,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:29:45,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:45" (1/1) ... [2020-09-25 04:29:45,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:45" (1/1) ... [2020-09-25 04:29:45,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:45" (1/1) ... [2020-09-25 04:29:45,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:45" (1/1) ... [2020-09-25 04:29:45,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:45" (1/1) ... [2020-09-25 04:29:45,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:45" (1/1) ... [2020-09-25 04:29:45,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:45" (1/1) ... [2020-09-25 04:29:45,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:29:45,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:29:45,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:29:45,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:29:45,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:45" (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 04:29:46,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:29:46,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:29:46,014 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:29:46,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:29:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:29:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:29:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:29:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:29:46,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:29:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:29:46,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:29:47,512 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:29:47,513 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:29:47,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:47 BoogieIcfgContainer [2020-09-25 04:29:47,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:29:47,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:29:47,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:29:47,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:29:47,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:29:44" (1/3) ... [2020-09-25 04:29:47,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b1cfa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:47, skipping insertion in model container [2020-09-25 04:29:47,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:45" (2/3) ... [2020-09-25 04:29:47,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b1cfa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:47, skipping insertion in model container [2020-09-25 04:29:47,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:47" (3/3) ... [2020-09-25 04:29:47,534 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label11.c [2020-09-25 04:29:47,548 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:29:47,564 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:29:47,589 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:29:47,634 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:29:47,635 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:29:47,636 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:29:47,636 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:29:47,636 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:29:47,636 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:29:47,636 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:29:47,637 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:29:47,682 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:29:47,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 04:29:47,701 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:47,703 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] [2020-09-25 04:29:47,703 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:47,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:47,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1178337343, now seen corresponding path program 1 times [2020-09-25 04:29:47,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:47,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335176633] [2020-09-25 04:29:47,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:48,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:48,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:48,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:49,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:49,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 04:29:49,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:29:49,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1742 [2020-09-25 04:29:49,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:49,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:49,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:29:49,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:29:49,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 04:29:49,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:29:49,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:49,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:49,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:49,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:49,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:49,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 04:29:49,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:49,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:49,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:49,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:49,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:29:49,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:49,983 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 04:29:49,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335176633] [2020-09-25 04:29:49,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:29:49,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:29:49,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455262305] [2020-09-25 04:29:49,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:29:49,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:50,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:29:50,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:29:50,018 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:29:52,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:52,179 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 04:29:52,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:29:52,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-09-25 04:29:52,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:52,208 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 04:29:52,208 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 04:29:52,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 04:29:52,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 04:29:52,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 04:29:52,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 04:29:52,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 04:29:52,323 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 80 [2020-09-25 04:29:52,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:52,324 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 04:29:52,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:29:52,326 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 04:29:52,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 04:29:52,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:52,343 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:52,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:29:52,344 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:52,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:52,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1494862159, now seen corresponding path program 1 times [2020-09-25 04:29:52,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:52,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199779360] [2020-09-25 04:29:52,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:52,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:52,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:52,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:53,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:53,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:56,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:56,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 04:29:56,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:29:56,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3985 [2020-09-25 04:29:56,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:56,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:29:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:29:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 04:29:56,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:56,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:29:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:56,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:56,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:56,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:29:56,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:56,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:29:56,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:56,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:56,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:29:56,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:56,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:29:56,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:56,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:29:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:56,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:56,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:29:56,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:29:56,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:29:56,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 04:29:56,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:29:56,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:29:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:29:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:29:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:29:56,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:29:56,705 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:29:56,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199779360] [2020-09-25 04:29:56,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:29:56,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:29:56,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463174608] [2020-09-25 04:29:56,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:29:56,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:29:56,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:29:56,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:29:56,711 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 04:29:58,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:29:58,486 INFO L93 Difference]: Finished difference Result 698 states and 888 transitions. [2020-09-25 04:29:58,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:29:58,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 04:29:58,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:29:58,499 INFO L225 Difference]: With dead ends: 698 [2020-09-25 04:29:58,499 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 04:29:58,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:29:58,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 04:29:58,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2020-09-25 04:29:58,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-25 04:29:58,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 886 transitions. [2020-09-25 04:29:58,570 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 886 transitions. Word has length 159 [2020-09-25 04:29:58,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:29:58,574 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 886 transitions. [2020-09-25 04:29:58,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:29:58,574 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 886 transitions. [2020-09-25 04:29:58,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 04:29:58,583 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:58,585 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:58,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:29:58,586 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:58,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:58,586 INFO L82 PathProgramCache]: Analyzing trace with hash -663007827, now seen corresponding path program 1 times [2020-09-25 04:29:58,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:29:58,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322250637] [2020-09-25 04:29:58,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:29:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:29:58,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:58,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:58,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:58,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:29:59,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:02,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:02,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:02,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:03,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:03,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 04:30:03,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:30:03,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:30:03,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:03,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:03,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:03,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 04:30:03,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 04:30:03,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:03,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:03,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:03,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:03,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:03,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:03,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:30:03,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:03,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:03,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:03,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:03,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:03,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:03,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:30:03,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:03,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 04:30:03,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:03,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:03,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:30:03,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:03,973 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:03,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322250637] [2020-09-25 04:30:03,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:03,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:03,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294699886] [2020-09-25 04:30:03,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:03,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:03,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:03,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:03,976 INFO L87 Difference]: Start difference. First operand 696 states and 886 transitions. Second operand 5 states. [2020-09-25 04:30:05,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:05,878 INFO L93 Difference]: Finished difference Result 1530 states and 2047 transitions. [2020-09-25 04:30:05,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:05,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-09-25 04:30:05,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:05,890 INFO L225 Difference]: With dead ends: 1530 [2020-09-25 04:30:05,890 INFO L226 Difference]: Without dead ends: 1000 [2020-09-25 04:30:05,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:05,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2020-09-25 04:30:05,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 1000. [2020-09-25 04:30:05,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-09-25 04:30:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1280 transitions. [2020-09-25 04:30:05,951 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1280 transitions. Word has length 169 [2020-09-25 04:30:05,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:05,953 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1280 transitions. [2020-09-25 04:30:05,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:05,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1280 transitions. [2020-09-25 04:30:05,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 04:30:05,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:05,959 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:05,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:30:05,959 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:05,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:05,960 INFO L82 PathProgramCache]: Analyzing trace with hash -333534806, now seen corresponding path program 1 times [2020-09-25 04:30:05,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:05,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698154718] [2020-09-25 04:30:05,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:06,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:06,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:06,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:07,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:11,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:11,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-25 04:30:11,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:30:11,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 04:30:11,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:11,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:11,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:30:11,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 04:30:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 04:30:11,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:11,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:11,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:11,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:11,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:11,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:11,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:30:11,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:11,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:11,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:11,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:11,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:30:11,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:11,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:11,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:11,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:11,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 04:30:11,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:11,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-25 04:30:11,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:11,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:11,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:11,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:11,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 04:30:11,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:11,607 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:11,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698154718] [2020-09-25 04:30:11,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:30:11,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:30:11,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533379295] [2020-09-25 04:30:11,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:30:11,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:11,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:30:11,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:30:11,612 INFO L87 Difference]: Start difference. First operand 1000 states and 1280 transitions. Second operand 8 states. [2020-09-25 04:30:14,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:14,769 INFO L93 Difference]: Finished difference Result 2336 states and 3047 transitions. [2020-09-25 04:30:14,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 04:30:14,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 226 [2020-09-25 04:30:14,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:14,782 INFO L225 Difference]: With dead ends: 2336 [2020-09-25 04:30:14,782 INFO L226 Difference]: Without dead ends: 1351 [2020-09-25 04:30:14,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:30:14,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2020-09-25 04:30:14,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1011. [2020-09-25 04:30:14,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-09-25 04:30:14,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1207 transitions. [2020-09-25 04:30:14,861 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1207 transitions. Word has length 226 [2020-09-25 04:30:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:14,861 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1207 transitions. [2020-09-25 04:30:14,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:30:14,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1207 transitions. [2020-09-25 04:30:14,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 04:30:14,867 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:14,867 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, 3, 3, 3, 3, 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] [2020-09-25 04:30:14,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:30:14,867 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:14,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:14,868 INFO L82 PathProgramCache]: Analyzing trace with hash 898961864, now seen corresponding path program 1 times [2020-09-25 04:30:14,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:14,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641299861] [2020-09-25 04:30:14,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:14,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:15,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:15,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:15,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:16,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:16,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:16,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:16,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:19,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:19,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:19,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 04:30:19,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:30:19,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-25 04:30:19,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:19,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:19,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:19,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:30:19,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 04:30:19,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:20,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:20,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:20,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:20,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:20,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:20,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:30:20,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:20,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:20,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:20,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:20,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:20,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:20,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:20,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:20,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:20,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:30:20,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:20,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 04:30:20,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:20,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:20,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:20,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:20,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:30:20,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:20,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:30:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:20,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:20,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:20,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:30:20,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:20,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 04:30:20,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:20,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:20,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:20,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:30:20,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:20,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641299861] [2020-09-25 04:30:20,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:20,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:20,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731071095] [2020-09-25 04:30:20,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:20,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:20,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:20,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:20,745 INFO L87 Difference]: Start difference. First operand 1011 states and 1207 transitions. Second operand 7 states. [2020-09-25 04:30:22,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:22,765 INFO L93 Difference]: Finished difference Result 2185 states and 2674 transitions. [2020-09-25 04:30:22,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:30:22,766 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-09-25 04:30:22,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:22,773 INFO L225 Difference]: With dead ends: 2185 [2020-09-25 04:30:22,773 INFO L226 Difference]: Without dead ends: 1339 [2020-09-25 04:30:22,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:30:22,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2020-09-25 04:30:22,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1329. [2020-09-25 04:30:22,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1329 states. [2020-09-25 04:30:22,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1564 transitions. [2020-09-25 04:30:22,814 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1564 transitions. Word has length 242 [2020-09-25 04:30:22,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:22,814 INFO L479 AbstractCegarLoop]: Abstraction has 1329 states and 1564 transitions. [2020-09-25 04:30:22,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:22,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1564 transitions. [2020-09-25 04:30:22,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-09-25 04:30:22,820 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:22,820 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, 3, 3, 3, 3, 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 04:30:22,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:30:22,821 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:22,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:22,821 INFO L82 PathProgramCache]: Analyzing trace with hash 889304234, now seen corresponding path program 1 times [2020-09-25 04:30:22,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:22,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178699370] [2020-09-25 04:30:22,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:22,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:22,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:23,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:23,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:23,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:25,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:25,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:25,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:27,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:27,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:27,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-09-25 04:30:27,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:30:27,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 04:30:27,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:27,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:27,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:27,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 04:30:27,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 04:30:27,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:27,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:27,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:27,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:27,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:27,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:27,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:30:27,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:27,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:27,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:28,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:28,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:28,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:28,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:30:28,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:28,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 04:30:28,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:28,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:28,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:28,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:28,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 04:30:28,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:28,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 04:30:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:28,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:28,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:28,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:30:28,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:28,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 04:30:28,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:28,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:28,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:28,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:28,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:30:28,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:28,505 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:28,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178699370] [2020-09-25 04:30:28,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:28,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:28,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084008284] [2020-09-25 04:30:28,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:28,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:28,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:28,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:28,510 INFO L87 Difference]: Start difference. First operand 1329 states and 1564 transitions. Second operand 7 states.