/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=0.5 --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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:36:38,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:36:38,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:36:38,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:36:38,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:36:38,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:36:38,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:36:38,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:36:38,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:36:38,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:36:38,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:36:38,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:36:38,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:36:38,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:36:38,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:36:38,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:36:38,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:36:38,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:36:38,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:36:38,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:36:38,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:36:38,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:36:38,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:36:38,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:36:38,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:36:38,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:36:38,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:36:38,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:36:38,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:36:38,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:36:38,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:36:38,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:36:38,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:36:38,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:36:38,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:36:38,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:36:38,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:36:38,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:36:38,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:36:38,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:36:38,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:36:38,717 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 14:36:38,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:36:38,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:36:38,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:36:38,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:36:38,770 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:36:38,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:36:38,771 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:36:38,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:36:38,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:36:38,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:36:38,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:36:38,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:36:38,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:36:38,774 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:36:38,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:36:38,774 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:36:38,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:36:38,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:36:38,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:36:38,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:36:38,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:36:38,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:36:38,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:36:38,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:36:38,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:36:38,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:36:38,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:36:38,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:36:38,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:36:38,777 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:36:39,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:36:39,288 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:36:39,293 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:36:39,295 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:36:39,295 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:36:39,296 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-09-25 14:36:39,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/370025ca5/f2b91393053e4be895bef4aeee2077f8/FLAG8441d6bfa [2020-09-25 14:36:40,027 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:36:40,028 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-09-25 14:36:40,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/370025ca5/f2b91393053e4be895bef4aeee2077f8/FLAG8441d6bfa [2020-09-25 14:36:40,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/370025ca5/f2b91393053e4be895bef4aeee2077f8 [2020-09-25 14:36:40,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:36:40,286 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:36:40,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:40,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:36:40,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:36:40,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:40" (1/1) ... [2020-09-25 14:36:40,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12391971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:40, skipping insertion in model container [2020-09-25 14:36:40,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:40" (1/1) ... [2020-09-25 14:36:40,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:36:40,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:36:40,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:40,906 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:36:41,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:41,149 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:36:41,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:41 WrapperNode [2020-09-25 14:36:41,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:41,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:36:41,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:36:41,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:36:41,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:41" (1/1) ... [2020-09-25 14:36:41,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:41" (1/1) ... [2020-09-25 14:36:41,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:41" (1/1) ... [2020-09-25 14:36:41,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:41" (1/1) ... [2020-09-25 14:36:41,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:41" (1/1) ... [2020-09-25 14:36:41,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:41" (1/1) ... [2020-09-25 14:36:41,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:41" (1/1) ... [2020-09-25 14:36:41,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:36:41,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:36:41,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:36:41,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:36:41,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:41" (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 14:36:41,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:36:41,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:36:41,379 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:36:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:36:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:36:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:36:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:36:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:36:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:36:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:36:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:36:42,717 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:36:42,717 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:36:42,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:42 BoogieIcfgContainer [2020-09-25 14:36:42,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:36:42,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:36:42,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:36:42,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:36:42,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:36:40" (1/3) ... [2020-09-25 14:36:42,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2543eee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:42, skipping insertion in model container [2020-09-25 14:36:42,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:41" (2/3) ... [2020-09-25 14:36:42,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2543eee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:42, skipping insertion in model container [2020-09-25 14:36:42,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:42" (3/3) ... [2020-09-25 14:36:42,738 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label11.c [2020-09-25 14:36:42,750 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:36:42,762 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:36:42,788 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:36:42,825 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:36:42,825 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:36:42,825 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:36:42,825 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:36:42,825 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:36:42,826 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:36:42,826 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:36:42,826 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:36:42,859 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:36:42,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 14:36:42,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:42,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:42,882 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:42,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:42,891 INFO L82 PathProgramCache]: Analyzing trace with hash 149723165, now seen corresponding path program 1 times [2020-09-25 14:36:42,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:42,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457045145] [2020-09-25 14:36:42,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:43,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:43,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:43,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:44,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:44,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:44,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:47,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:48,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:48,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 14:36:48,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:36:48,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 14:36:48,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:48,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:36:48,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:36:48,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 14:36:48,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-09-25 14:36:48,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:48,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:48,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:48,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:36:48,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:36:48,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:48,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:36:48,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:48,567 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 14:36:48,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457045145] [2020-09-25 14:36:48,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:36:48,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:36:48,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268743466] [2020-09-25 14:36:48,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:36:48,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:48,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:36:48,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:36:48,600 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 14:36:50,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:50,858 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 14:36:50,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:36:50,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-25 14:36:50,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:50,887 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 14:36:50,887 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 14:36:50,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 14:36:50,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 14:36:50,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 14:36:50,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 14:36:51,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 14:36:51,004 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 137 [2020-09-25 14:36:51,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:51,005 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 14:36:51,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:36:51,006 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 14:36:51,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 14:36:51,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:51,015 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:51,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:36:51,015 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:51,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:51,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1946630892, now seen corresponding path program 1 times [2020-09-25 14:36:51,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:51,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833830816] [2020-09-25 14:36:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:51,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:51,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:51,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:51,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:51,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:52,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:55,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:55,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:56,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:56,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 14:36:56,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:36:56,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 14:36:56,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:56,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:56,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:36:56,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 14:36:56,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 14:36:56,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 14:36:56,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:56,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:56,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:56,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:36:56,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:56,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:36:56,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:56,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:56,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:56,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:56,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:56,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 14:36:56,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:36:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:56,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:56,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:56,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:36:56,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:56,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:36:56,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:56,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:56,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:56,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:36:56,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:56,474 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 14:36:56,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833830816] [2020-09-25 14:36:56,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:56,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:36:56,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129190543] [2020-09-25 14:36:56,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:36:56,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:56,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:36:56,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:36:56,481 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 5 states. [2020-09-25 14:36:58,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:58,674 INFO L93 Difference]: Finished difference Result 1503 states and 1888 transitions. [2020-09-25 14:36:58,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:36:58,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-09-25 14:36:58,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:58,682 INFO L225 Difference]: With dead ends: 1503 [2020-09-25 14:36:58,682 INFO L226 Difference]: Without dead ends: 924 [2020-09-25 14:36:58,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:36:58,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-25 14:36:58,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 748. [2020-09-25 14:36:58,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-09-25 14:36:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 899 transitions. [2020-09-25 14:36:58,742 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 899 transitions. Word has length 158 [2020-09-25 14:36:58,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:58,744 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 899 transitions. [2020-09-25 14:36:58,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:36:58,745 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 899 transitions. [2020-09-25 14:36:58,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 14:36:58,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:58,754 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:58,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:36:58,754 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:58,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:58,755 INFO L82 PathProgramCache]: Analyzing trace with hash -464697292, now seen corresponding path program 1 times [2020-09-25 14:36:58,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:58,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605703554] [2020-09-25 14:36:58,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:58,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:58,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:59,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:59,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:59,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:59,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:59,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:59,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:00,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:01,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:01,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:03,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:03,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 14:37:03,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:37:03,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:37:03,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:03,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:03,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:03,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 14:37:03,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 14:37:03,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:03,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:04,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:04,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:04,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:04,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:04,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:37:04,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:04,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:04,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:37:04,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:04,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:04,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:04,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:37:04,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:04,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 14:37:04,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:04,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:04,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:04,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:04,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:37:04,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:37:04,202 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:04,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605703554] [2020-09-25 14:37:04,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:04,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:37:04,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370161542] [2020-09-25 14:37:04,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:37:04,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:04,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:37:04,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:37:04,207 INFO L87 Difference]: Start difference. First operand 748 states and 899 transitions. Second operand 6 states. [2020-09-25 14:37:06,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:06,953 INFO L93 Difference]: Finished difference Result 2400 states and 3005 transitions. [2020-09-25 14:37:06,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:37:06,956 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-09-25 14:37:06,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:06,974 INFO L225 Difference]: With dead ends: 2400 [2020-09-25 14:37:06,975 INFO L226 Difference]: Without dead ends: 1676 [2020-09-25 14:37:06,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:37:06,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2020-09-25 14:37:07,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1332. [2020-09-25 14:37:07,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1332 states. [2020-09-25 14:37:07,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1638 transitions. [2020-09-25 14:37:07,064 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1638 transitions. Word has length 167 [2020-09-25 14:37:07,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:07,065 INFO L479 AbstractCegarLoop]: Abstraction has 1332 states and 1638 transitions. [2020-09-25 14:37:07,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:37:07,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1638 transitions. [2020-09-25 14:37:07,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 14:37:07,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:07,076 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:07,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:37:07,077 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:07,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:07,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1879775890, now seen corresponding path program 1 times [2020-09-25 14:37:07,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:07,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938575358] [2020-09-25 14:37:07,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:07,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:07,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:07,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:08,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:12,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:12,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 14:37:12,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:37:12,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:37:12,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:12,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:37:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:37:12,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:37:12,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:12,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:12,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:12,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:12,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:12,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:12,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 14:37:12,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:12,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:12,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:12,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:12,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:37:12,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:12,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:12,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:12,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:12,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:37:12,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:12,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 14:37:12,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:12,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:12,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:12,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:37:12,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:37:12,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:37:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:12,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938575358] [2020-09-25 14:37:12,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:37:12,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:37:12,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354142074] [2020-09-25 14:37:12,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:37:12,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:12,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:37:12,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:37:12,591 INFO L87 Difference]: Start difference. First operand 1332 states and 1638 transitions. Second operand 7 states. [2020-09-25 14:37:14,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:14,531 INFO L93 Difference]: Finished difference Result 2586 states and 3185 transitions. [2020-09-25 14:37:14,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:37:14,532 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-09-25 14:37:14,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:14,539 INFO L225 Difference]: With dead ends: 2586 [2020-09-25 14:37:14,539 INFO L226 Difference]: Without dead ends: 1278 [2020-09-25 14:37:14,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 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 14:37:14,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-09-25 14:37:14,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1189. [2020-09-25 14:37:14,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1189 states. [2020-09-25 14:37:14,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1435 transitions. [2020-09-25 14:37:14,580 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1435 transitions. Word has length 172 [2020-09-25 14:37:14,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:14,580 INFO L479 AbstractCegarLoop]: Abstraction has 1189 states and 1435 transitions. [2020-09-25 14:37:14,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:37:14,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1435 transitions. [2020-09-25 14:37:14,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 14:37:14,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:14,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:14,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:37:14,587 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:14,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:14,587 INFO L82 PathProgramCache]: Analyzing trace with hash 853786687, now seen corresponding path program 1 times [2020-09-25 14:37:14,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:14,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301870205] [2020-09-25 14:37:14,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:14,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:14,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:15,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:15,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:16,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:17,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:18,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:18,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:19,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:19,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 14:37:19,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:37:19,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 14:37:19,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:19,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 14:37:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 14:37:19,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:19,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:19,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:19,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:19,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:19,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:19,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:37:19,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:19,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:19,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:19,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:19,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:19,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:19,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 14:37:19,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:19,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 14:37:19,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:19,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:19,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:19,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:19,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 14:37:19,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:37:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:19,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301870205] [2020-09-25 14:37:19,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:19,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:19,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283571639] [2020-09-25 14:37:19,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:19,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:19,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:19,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:19,932 INFO L87 Difference]: Start difference. First operand 1189 states and 1435 transitions. Second operand 5 states. [2020-09-25 14:37:22,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:22,429 INFO L93 Difference]: Finished difference Result 3323 states and 4142 transitions. [2020-09-25 14:37:22,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:22,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-09-25 14:37:22,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:22,445 INFO L225 Difference]: With dead ends: 3323 [2020-09-25 14:37:22,446 INFO L226 Difference]: Without dead ends: 2158 [2020-09-25 14:37:22,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:37:22,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2020-09-25 14:37:22,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 1793. [2020-09-25 14:37:22,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1793 states. [2020-09-25 14:37:22,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2192 transitions. [2020-09-25 14:37:22,521 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2192 transitions. Word has length 186 [2020-09-25 14:37:22,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:22,522 INFO L479 AbstractCegarLoop]: Abstraction has 1793 states and 2192 transitions. [2020-09-25 14:37:22,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:22,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2192 transitions. [2020-09-25 14:37:22,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 14:37:22,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:22,530 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:22,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:37:22,531 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:22,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:22,531 INFO L82 PathProgramCache]: Analyzing trace with hash -574372166, now seen corresponding path program 1 times [2020-09-25 14:37:22,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:22,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278446664] [2020-09-25 14:37:22,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:22,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:22,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:22,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:22,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking...