/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=0.4 --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_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:29:47,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:29:47,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:29:47,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:29:47,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:29:47,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:29:47,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:29:47,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:29:47,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:29:47,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:29:47,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:29:47,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:29:47,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:29:47,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:29:47,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:29:47,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:29:47,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:29:47,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:29:47,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:29:47,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:29:47,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:29:47,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:29:47,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:29:47,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:29:47,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:29:47,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:29:47,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:29:47,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:29:47,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:29:47,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:29:47,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:29:47,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:29:47,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:29:47,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:29:47,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:29:47,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:29:47,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:29:47,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:29:47,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:29:47,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:29:47,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:29:47,130 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 13:29:47,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:29:47,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:29:47,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:29:47,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:29:47,158 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:29:47,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:29:47,159 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:29:47,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:29:47,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:29:47,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:29:47,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:29:47,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:29:47,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:29:47,160 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:29:47,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:29:47,161 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:29:47,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:29:47,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:29:47,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:29:47,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:29:47,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:29:47,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:29:47,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:29:47,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:29:47,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:29:47,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:29:47,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:29:47,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:29:47,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:29:47,163 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:29:47,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:29:47,666 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:29:47,673 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:29:47,675 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:29:47,676 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:29:47,677 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label43.c [2020-09-25 13:29:47,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1fb7a64a/0d4a84a1eafe499c84637bfdd587194a/FLAGdef37ae4a [2020-09-25 13:29:48,491 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:29:48,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label43.c [2020-09-25 13:29:48,508 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1fb7a64a/0d4a84a1eafe499c84637bfdd587194a/FLAGdef37ae4a [2020-09-25 13:29:48,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1fb7a64a/0d4a84a1eafe499c84637bfdd587194a [2020-09-25 13:29:48,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:29:48,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:29:48,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:48,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:29:48,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:29:48,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:48" (1/1) ... [2020-09-25 13:29:48,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d064956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:48, skipping insertion in model container [2020-09-25 13:29:48,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:48" (1/1) ... [2020-09-25 13:29:48,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:29:48,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:29:49,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:49,288 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:29:49,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:49,534 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:29:49,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:49 WrapperNode [2020-09-25 13:29:49,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:49,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:29:49,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:29:49,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:29:49,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:49" (1/1) ... [2020-09-25 13:29:49,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:49" (1/1) ... [2020-09-25 13:29:49,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:49" (1/1) ... [2020-09-25 13:29:49,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:49" (1/1) ... [2020-09-25 13:29:49,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:49" (1/1) ... [2020-09-25 13:29:49,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:49" (1/1) ... [2020-09-25 13:29:49,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:49" (1/1) ... [2020-09-25 13:29:49,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:29:49,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:29:49,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:29:49,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:29:49,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:49" (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 13:29:49,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:29:49,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:29:49,850 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:29:49,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:29:49,851 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:29:49,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:29:49,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:29:49,853 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:29:49,853 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:29:49,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:29:49,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:29:51,436 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:29:51,437 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:29:51,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:51 BoogieIcfgContainer [2020-09-25 13:29:51,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:29:51,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:29:51,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:29:51,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:29:51,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:29:48" (1/3) ... [2020-09-25 13:29:51,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507a296d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:51, skipping insertion in model container [2020-09-25 13:29:51,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:49" (2/3) ... [2020-09-25 13:29:51,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507a296d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:51, skipping insertion in model container [2020-09-25 13:29:51,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:51" (3/3) ... [2020-09-25 13:29:51,458 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label43.c [2020-09-25 13:29:51,470 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:29:51,482 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:29:51,507 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:29:51,547 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:29:51,548 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:29:51,548 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:29:51,548 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:29:51,548 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:29:51,548 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:29:51,548 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:29:51,549 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:29:51,593 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:29:51,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 13:29:51,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:51,637 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] [2020-09-25 13:29:51,637 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:51,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:51,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1333625535, now seen corresponding path program 1 times [2020-09-25 13:29:51,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:51,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127028084] [2020-09-25 13:29:51,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:52,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:52,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:52,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:53,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:54,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:55,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:56,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:57,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:57,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 13:29:57,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:29:57,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-09-25 13:29:57,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:57,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:57,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:29:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:29:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-09-25 13:29:57,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 13:29:57,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:57,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:57,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:57,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:57,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:57,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 13:29:57,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:57,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:29:57,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:57,413 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 13:29:57,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127028084] [2020-09-25 13:29:57,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:29:57,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:29:57,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770153283] [2020-09-25 13:29:57,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:57,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:57,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:57,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:57,449 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 13:30:00,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:00,665 INFO L93 Difference]: Finished difference Result 1360 states and 1895 transitions. [2020-09-25 13:30:00,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:30:00,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 13:30:00,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:00,696 INFO L225 Difference]: With dead ends: 1360 [2020-09-25 13:30:00,696 INFO L226 Difference]: Without dead ends: 781 [2020-09-25 13:30:00,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:30:00,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-25 13:30:00,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 746. [2020-09-25 13:30:00,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-25 13:30:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 914 transitions. [2020-09-25 13:30:00,818 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 914 transitions. Word has length 156 [2020-09-25 13:30:00,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:00,819 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 914 transitions. [2020-09-25 13:30:00,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:30:00,819 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 914 transitions. [2020-09-25 13:30:00,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 13:30:00,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:00,826 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] [2020-09-25 13:30:00,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:30:00,827 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:00,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:00,827 INFO L82 PathProgramCache]: Analyzing trace with hash 2141714320, now seen corresponding path program 1 times [2020-09-25 13:30:00,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:00,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599293905] [2020-09-25 13:30:00,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:00,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:00,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:01,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:01,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:01,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:02,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:05,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:05,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 13:30:05,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:30:05,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:30:05,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:05,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:30:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 13:30:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 13:30:05,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:06,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:06,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:06,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:06,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:06,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:06,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:30:06,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:06,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:06,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:06,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:06,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:06,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:06,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:06,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:30:06,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:06,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 13:30:06,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:06,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:06,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:30:06,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:06,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:30:06,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:06,588 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 13:30:06,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599293905] [2020-09-25 13:30:06,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:06,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:30:06,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575208973] [2020-09-25 13:30:06,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:30:06,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:06,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:30:06,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:30:06,593 INFO L87 Difference]: Start difference. First operand 746 states and 914 transitions. Second operand 9 states. [2020-09-25 13:30:11,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:11,643 INFO L93 Difference]: Finished difference Result 2047 states and 2680 transitions. [2020-09-25 13:30:11,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:30:11,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2020-09-25 13:30:11,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:11,659 INFO L225 Difference]: With dead ends: 2047 [2020-09-25 13:30:11,659 INFO L226 Difference]: Without dead ends: 1030 [2020-09-25 13:30:11,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:30:11,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-09-25 13:30:11,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1003. [2020-09-25 13:30:11,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-09-25 13:30:11,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1169 transitions. [2020-09-25 13:30:11,714 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1169 transitions. Word has length 177 [2020-09-25 13:30:11,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:11,715 INFO L479 AbstractCegarLoop]: Abstraction has 1003 states and 1169 transitions. [2020-09-25 13:30:11,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:30:11,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1169 transitions. [2020-09-25 13:30:11,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 13:30:11,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:11,719 INFO L422 BasicCegarLoop]: trace histogram [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, 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 13:30:11,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:30:11,720 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:11,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:11,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1934583001, now seen corresponding path program 1 times [2020-09-25 13:30:11,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:11,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516239736] [2020-09-25 13:30:11,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:11,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:11,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:12,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:12,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:12,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:12,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:12,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:13,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:15,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:15,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:15,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:15,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:15,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:16,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:16,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 13:30:16,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:30:16,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 13:30:16,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:16,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:16,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 13:30:16,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 13:30:16,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:16,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:16,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:16,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:16,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:16,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:16,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:30:16,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:16,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:16,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:16,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:16,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:16,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:16,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:16,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:17,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:17,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:30:17,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:17,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:30:17,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:17,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:17,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:17,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:17,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:30:17,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:17,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516239736] [2020-09-25 13:30:17,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:17,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:30:17,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836704892] [2020-09-25 13:30:17,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:30:17,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:17,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:30:17,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:17,091 INFO L87 Difference]: Start difference. First operand 1003 states and 1169 transitions. Second operand 5 states. [2020-09-25 13:30:19,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:19,456 INFO L93 Difference]: Finished difference Result 2656 states and 3198 transitions. [2020-09-25 13:30:19,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:30:19,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 13:30:19,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:19,484 INFO L225 Difference]: With dead ends: 2656 [2020-09-25 13:30:19,484 INFO L226 Difference]: Without dead ends: 1518 [2020-09-25 13:30:19,489 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 13:30:19,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2020-09-25 13:30:19,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1277. [2020-09-25 13:30:19,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1277 states. [2020-09-25 13:30:19,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1519 transitions. [2020-09-25 13:30:19,565 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1519 transitions. Word has length 181 [2020-09-25 13:30:19,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:19,567 INFO L479 AbstractCegarLoop]: Abstraction has 1277 states and 1519 transitions. [2020-09-25 13:30:19,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:30:19,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1519 transitions. [2020-09-25 13:30:19,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 13:30:19,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:19,575 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:30:19,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:30:19,576 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:19,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:19,576 INFO L82 PathProgramCache]: Analyzing trace with hash -718562673, now seen corresponding path program 1 times [2020-09-25 13:30:19,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:19,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695134921] [2020-09-25 13:30:19,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:19,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:19,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:20,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:20,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:21,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:21,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:22,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:22,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:22,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:22,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:23,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:23,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:23,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:24,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:24,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 13:30:24,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:30:24,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 13:30:24,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:24,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 13:30:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 13:30:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 13:30:24,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:30:25,423 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-09-25 13:30:25,636 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2020-09-25 13:30:25,862 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 45 [2020-09-25 13:30:26,075 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 41 [2020-09-25 13:30:26,256 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 37 [2020-09-25 13:30:26,416 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 33 [2020-09-25 13:30:26,581 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 30 [2020-09-25 13:30:26,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:26,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:26,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:26,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:26,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:26,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:30:26,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:26,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:26,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:26,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:26,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:26,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:26,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:26,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:26,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:26,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 13:30:26,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:26,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 13:30:26,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:26,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:30:26,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:26,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:30:26,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:30:27,407 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:27,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695134921] [2020-09-25 13:30:27,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:27,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 13:30:27,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585323841] [2020-09-25 13:30:27,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 13:30:27,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:27,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 13:30:27,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:30:27,414 INFO L87 Difference]: Start difference. First operand 1277 states and 1519 transitions. Second operand 19 states. [2020-09-25 13:30:28,567 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-25 13:30:28,887 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-09-25 13:30:30,239 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 118 [2020-09-25 13:30:31,379 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 118 [2020-09-25 13:30:33,048 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 118 [2020-09-25 13:30:33,365 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-09-25 13:30:34,197 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 118 [2020-09-25 13:30:34,466 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-25 13:30:35,303 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 98 [2020-09-25 13:30:36,283 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 118 [2020-09-25 13:30:36,810 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 117 [2020-09-25 13:30:37,312 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 98 [2020-09-25 13:30:37,512 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-09-25 13:30:38,063 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 98