/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=0.1 --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_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:07:03,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:07:03,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:07:03,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:07:03,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:07:03,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:07:03,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:07:03,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:07:03,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:07:03,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:07:03,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:07:03,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:07:03,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:07:03,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:07:03,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:07:03,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:07:03,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:07:03,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:07:03,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:07:03,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:07:03,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:07:03,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:07:03,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:07:03,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:07:03,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:07:03,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:07:03,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:07:03,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:07:03,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:07:03,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:07:03,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:07:03,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:07:03,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:07:03,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:07:03,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:07:03,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:07:03,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:07:03,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:07:03,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:07:03,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:07:03,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:07:03,715 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 10:07:03,742 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:07:03,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:07:03,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:07:03,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:07:03,747 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:07:03,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:07:03,748 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:07:03,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:07:03,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:07:03,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:07:03,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:07:03,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:07:03,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:07:03,749 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:07:03,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:07:03,750 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:07:03,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:07:03,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:07:03,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:07:03,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:07:03,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:07:03,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:07:03,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:07:03,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:07:03,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:07:03,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:07:03,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:07:03,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:07:03,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:07:03,758 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:07:04,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:07:04,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:07:04,267 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:07:04,269 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:07:04,269 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:07:04,270 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-09-25 10:07:04,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf74e1fb3/af17308ad9154ff68e2b4a259b83ca0b/FLAG0a97ce008 [2020-09-25 10:07:05,029 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:07:05,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-09-25 10:07:05,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf74e1fb3/af17308ad9154ff68e2b4a259b83ca0b/FLAG0a97ce008 [2020-09-25 10:07:05,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf74e1fb3/af17308ad9154ff68e2b4a259b83ca0b [2020-09-25 10:07:05,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:07:05,273 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:07:05,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:07:05,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:07:05,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:07:05,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:07:05" (1/1) ... [2020-09-25 10:07:05,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:05, skipping insertion in model container [2020-09-25 10:07:05,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:07:05" (1/1) ... [2020-09-25 10:07:05,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:07:05,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:07:05,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:07:05,824 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:07:06,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:07:06,110 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:07:06,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:06 WrapperNode [2020-09-25 10:07:06,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:07:06,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:07:06,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:07:06,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:07:06,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:06" (1/1) ... [2020-09-25 10:07:06,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:06" (1/1) ... [2020-09-25 10:07:06,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:06" (1/1) ... [2020-09-25 10:07:06,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:06" (1/1) ... [2020-09-25 10:07:06,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:06" (1/1) ... [2020-09-25 10:07:06,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:06" (1/1) ... [2020-09-25 10:07:06,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:06" (1/1) ... [2020-09-25 10:07:06,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:07:06,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:07:06,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:07:06,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:07:06,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:06" (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 10:07:06,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:07:06,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:07:06,327 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:07:06,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:07:06,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:07:06,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:07:06,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:07:06,328 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:07:06,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:07:06,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:07:06,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:07:07,684 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:07:07,685 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:07:07,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:07:07 BoogieIcfgContainer [2020-09-25 10:07:07,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:07:07,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:07:07,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:07:07,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:07:07,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:07:05" (1/3) ... [2020-09-25 10:07:07,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:07:07, skipping insertion in model container [2020-09-25 10:07:07,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:06" (2/3) ... [2020-09-25 10:07:07,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:07:07, skipping insertion in model container [2020-09-25 10:07:07,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:07:07" (3/3) ... [2020-09-25 10:07:07,705 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label39.c [2020-09-25 10:07:07,717 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:07:07,728 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:07:07,752 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:07:07,794 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:07:07,795 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:07:07,795 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:07:07,795 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:07:07,796 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:07:07,796 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:07:07,796 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:07:07,796 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:07:07,836 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:07:07,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 10:07:07,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:07,862 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, 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 10:07:07,863 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:07,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:07,872 INFO L82 PathProgramCache]: Analyzing trace with hash -2068005297, now seen corresponding path program 1 times [2020-09-25 10:07:07,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:07,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523682103] [2020-09-25 10:07:07,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:08,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:08,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:09,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:09,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:10,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:11,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:13,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:13,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 10:07:13,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:07:13,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 10:07:13,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:13,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:13,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:07:13,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:07:13,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 10:07:13,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:07:13,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:13,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:13,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:13,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:13,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:13,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:07:13,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:13,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:13,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:13,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:13,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:07:13,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:13,577 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 10:07:13,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523682103] [2020-09-25 10:07:13,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:07:13,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:07:13,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557570318] [2020-09-25 10:07:13,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:07:13,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:13,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:07:13,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:07:13,614 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 10:07:16,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:16,527 INFO L93 Difference]: Finished difference Result 1360 states and 1895 transitions. [2020-09-25 10:07:16,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:07:16,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 10:07:16,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:16,557 INFO L225 Difference]: With dead ends: 1360 [2020-09-25 10:07:16,557 INFO L226 Difference]: Without dead ends: 781 [2020-09-25 10:07:16,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:07:16,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-25 10:07:16,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 746. [2020-09-25 10:07:16,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-25 10:07:16,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 914 transitions. [2020-09-25 10:07:16,699 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 914 transitions. Word has length 160 [2020-09-25 10:07:16,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:16,701 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 914 transitions. [2020-09-25 10:07:16,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:07:16,701 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 914 transitions. [2020-09-25 10:07:16,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 10:07:16,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:16,720 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, 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 10:07:16,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:07:16,721 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:16,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:16,721 INFO L82 PathProgramCache]: Analyzing trace with hash -32611680, now seen corresponding path program 1 times [2020-09-25 10:07:16,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:16,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949663829] [2020-09-25 10:07:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:16,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:16,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:17,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:17,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:17,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:18,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:19,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:20,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:21,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:21,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 10:07:21,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:07:21,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 10:07:21,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:21,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:21,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:07:21,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:07:21,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:07:21,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 10:07:22,446 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 30 [2020-09-25 10:07:22,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:22,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:22,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:22,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:22,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:22,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 10:07:22,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:22,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:22,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:22,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:22,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:07:22,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 10:07:22,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:22,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:22,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:22,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:22,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:22,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 10:07:22,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:22,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:07:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:07:22,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:07:22,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:23,122 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:07:23,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949663829] [2020-09-25 10:07:23,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:23,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:07:23,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135770605] [2020-09-25 10:07:23,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:07:23,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:23,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:07:23,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:07:23,127 INFO L87 Difference]: Start difference. First operand 746 states and 914 transitions. Second operand 13 states. [2020-09-25 10:07:23,582 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-09-25 10:07:24,336 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-09-25 10:07:24,528 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-09-25 10:07:25,198 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-09-25 10:07:25,892 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-09-25 10:07:26,260 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-09-25 10:07:28,103 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-09-25 10:07:28,942 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-09-25 10:07:30,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:30,804 INFO L93 Difference]: Finished difference Result 3021 states and 4087 transitions. [2020-09-25 10:07:30,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-25 10:07:30,805 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 181 [2020-09-25 10:07:30,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:30,831 INFO L225 Difference]: With dead ends: 3021 [2020-09-25 10:07:30,831 INFO L226 Difference]: Without dead ends: 2016 [2020-09-25 10:07:30,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=365, Invalid=895, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 10:07:30,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2020-09-25 10:07:30,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1526. [2020-09-25 10:07:30,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1526 states. [2020-09-25 10:07:30,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 1840 transitions. [2020-09-25 10:07:30,926 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 1840 transitions. Word has length 181 [2020-09-25 10:07:30,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:30,927 INFO L479 AbstractCegarLoop]: Abstraction has 1526 states and 1840 transitions. [2020-09-25 10:07:30,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:07:30,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 1840 transitions. [2020-09-25 10:07:30,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 10:07:30,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:30,943 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:07:30,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:07:30,943 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:30,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:30,944 INFO L82 PathProgramCache]: Analyzing trace with hash -503929143, now seen corresponding path program 1 times [2020-09-25 10:07:30,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:30,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516776064] [2020-09-25 10:07:30,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:30,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:31,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:31,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:31,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:34,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:34,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:34,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:36,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:36,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 10:07:36,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:07:36,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-09-25 10:07:36,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:36,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:36,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 10:07:36,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 10:07:36,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 10:07:36,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:36,760 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2020-09-25 10:07:37,075 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 46 [2020-09-25 10:07:37,350 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 46 [2020-09-25 10:07:37,630 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 46 [2020-09-25 10:07:37,915 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 46 [2020-09-25 10:07:38,142 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 45 [2020-09-25 10:07:38,340 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 42 [2020-09-25 10:07:38,571 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 43 [2020-09-25 10:07:38,798 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 41 [2020-09-25 10:07:39,025 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 39 [2020-09-25 10:07:39,224 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 37 [2020-09-25 10:07:39,389 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 34 [2020-09-25 10:07:39,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:39,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:39,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:39,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:39,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:39,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:07:39,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:39,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:39,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:39,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:39,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:39,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:39,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:39,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:39,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:39,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:39,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:39,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:07:39,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:39,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:39,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:39,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:39,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:07:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:39,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:39,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:39,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:07:39,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:39,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:07:39,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:39,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:39,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:39,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:39,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:07:39,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 10:07:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:39,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:39,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:39,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 10:07:39,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:39,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 10:07:39,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:39,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:07:39,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-25 10:07:39,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516776064] [2020-09-25 10:07:39,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:39,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 10:07:39,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370811480] [2020-09-25 10:07:39,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 10:07:39,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:39,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 10:07:39,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=269, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:07:39,947 INFO L87 Difference]: Start difference. First operand 1526 states and 1840 transitions. Second operand 21 states. [2020-09-25 10:07:41,630 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-25 10:07:41,819 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-25 10:07:42,170 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 98 [2020-09-25 10:07:42,862 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2020-09-25 10:07:43,320 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2020-09-25 10:07:43,708 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2020-09-25 10:07:43,905 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-09-25 10:07:44,334 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 96 [2020-09-25 10:07:44,704 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2020-09-25 10:07:45,041 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2020-09-25 10:07:45,785 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 94 [2020-09-25 10:07:46,117 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2020-09-25 10:07:46,555 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 91 [2020-09-25 10:07:47,005 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-09-25 10:07:47,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:47,409 INFO L93 Difference]: Finished difference Result 3301 states and 4139 transitions. [2020-09-25 10:07:47,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 10:07:47,411 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 239 [2020-09-25 10:07:47,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:47,427 INFO L225 Difference]: With dead ends: 3301 [2020-09-25 10:07:47,427 INFO L226 Difference]: Without dead ends: 1950 [2020-09-25 10:07:47,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=468, Invalid=864, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 10:07:47,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2020-09-25 10:07:47,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1903. [2020-09-25 10:07:47,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1903 states. [2020-09-25 10:07:47,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 2301 transitions. [2020-09-25 10:07:47,501 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 2301 transitions. Word has length 239 [2020-09-25 10:07:47,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:47,503 INFO L479 AbstractCegarLoop]: Abstraction has 1903 states and 2301 transitions. [2020-09-25 10:07:47,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 10:07:47,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 2301 transitions. [2020-09-25 10:07:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-25 10:07:47,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:47,513 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, 2, 2, 2, 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] [2020-09-25 10:07:47,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:07:47,514 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:47,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:47,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1095147014, now seen corresponding path program 1 times [2020-09-25 10:07:47,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:47,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135333636] [2020-09-25 10:07:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:47,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:47,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:47,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:47,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:48,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:48,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:48,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:52,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:52,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-09-25 10:07:52,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:07:52,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 10:07:52,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:52,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:52,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:07:52,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:07:52,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-09-25 10:07:52,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:52,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:52,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:52,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:52,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:52,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:52,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 10:07:52,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:52,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:07:52,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:52,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:52,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:52,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:52,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:52,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:07:52,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:52,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 10:07:52,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:52,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:52,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:52,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:52,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:07:52,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:52,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:07:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:52,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:53,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:53,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:53,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 10:07:53,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:53,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-09-25 10:07:53,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:53,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:07:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 10:07:53,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:53,543 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 10:07:53,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135333636] [2020-09-25 10:07:53,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:53,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:07:53,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736995977] [2020-09-25 10:07:53,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:07:53,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:53,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:07:53,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:07:53,546 INFO L87 Difference]: Start difference. First operand 1903 states and 2301 transitions. Second operand 11 states.