/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem02_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:43:57,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:43:57,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:43:57,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:43:57,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:43:57,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:43:57,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:43:57,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:43:57,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:43:57,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:43:57,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:43:57,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:43:57,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:43:57,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:43:57,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:43:57,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:43:57,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:43:57,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:43:57,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:43:57,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:43:57,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:43:57,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:43:57,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:43:57,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:43:57,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:43:57,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:43:57,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:43:57,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:43:57,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:43:57,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:43:57,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:43:57,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:43:57,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:43:57,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:43:57,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:43:57,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:43:57,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:43:57,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:43:57,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:43:57,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:43:57,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:43:57,532 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 06:43:57,560 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:43:57,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:43:57,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:43:57,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:43:57,561 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:43:57,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:43:57,562 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:43:57,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:43:57,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:43:57,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:43:57,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:43:57,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:43:57,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:43:57,563 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:43:57,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:43:57,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:43:57,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:43:57,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:43:57,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:43:57,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:43:57,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:43:57,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:43:57,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:43:57,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:43:57,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:43:57,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:43:57,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:43:57,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:43:57,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:43:57,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:43:57,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:43:58,014 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:43:58,019 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:43:58,021 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:43:58,023 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:43:58,024 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label09.c [2020-09-25 06:43:58,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab5ecca26/209939696eb64a399c76f4f1766d7a77/FLAG820f6fcbd [2020-09-25 06:43:58,789 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:43:58,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label09.c [2020-09-25 06:43:58,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab5ecca26/209939696eb64a399c76f4f1766d7a77/FLAG820f6fcbd [2020-09-25 06:43:58,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab5ecca26/209939696eb64a399c76f4f1766d7a77 [2020-09-25 06:43:59,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:43:59,017 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:43:59,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:59,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:43:59,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:43:59,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:58" (1/1) ... [2020-09-25 06:43:59,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b22a6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:59, skipping insertion in model container [2020-09-25 06:43:59,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:58" (1/1) ... [2020-09-25 06:43:59,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:43:59,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:43:59,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:59,572 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:43:59,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:59,849 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:43:59,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:59 WrapperNode [2020-09-25 06:43:59,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:59,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:43:59,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:43:59,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:43:59,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:59" (1/1) ... [2020-09-25 06:43:59,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:59" (1/1) ... [2020-09-25 06:43:59,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:59" (1/1) ... [2020-09-25 06:43:59,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:59" (1/1) ... [2020-09-25 06:43:59,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:59" (1/1) ... [2020-09-25 06:43:59,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:59" (1/1) ... [2020-09-25 06:44:00,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:59" (1/1) ... [2020-09-25 06:44:00,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:44:00,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:44:00,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:44:00,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:44:00,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:59" (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 06:44:00,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:44:00,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:44:00,111 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:44:00,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:44:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:44:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:44:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:44:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:44:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:44:00,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:44:00,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:44:01,518 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:44:01,519 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:44:01,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:44:01 BoogieIcfgContainer [2020-09-25 06:44:01,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:44:01,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:44:01,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:44:01,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:44:01,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:43:58" (1/3) ... [2020-09-25 06:44:01,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ab69bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:44:01, skipping insertion in model container [2020-09-25 06:44:01,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:59" (2/3) ... [2020-09-25 06:44:01,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ab69bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:44:01, skipping insertion in model container [2020-09-25 06:44:01,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:44:01" (3/3) ... [2020-09-25 06:44:01,546 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label09.c [2020-09-25 06:44:01,557 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:44:01,572 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:44:01,596 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:44:01,645 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:44:01,646 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:44:01,646 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:44:01,646 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:44:01,646 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:44:01,647 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:44:01,647 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:44:01,647 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:44:01,695 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:44:01,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 06:44:01,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:01,739 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] [2020-09-25 06:44:01,740 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:01,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:01,750 INFO L82 PathProgramCache]: Analyzing trace with hash -260189822, now seen corresponding path program 1 times [2020-09-25 06:44:01,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:01,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813985330] [2020-09-25 06:44:01,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:02,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:02,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:03,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:03,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:04,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:05,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:06,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:06,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:06,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:06,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:07,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:07,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 06:44:07,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:44:07,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 06:44:07,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:07,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:44:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:44:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 06:44:07,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:44:07,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:07,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:07,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:07,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:07,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:07,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 06:44:07,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:07,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:07,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:07,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:07,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:44:07,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:07,556 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 06:44:07,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813985330] [2020-09-25 06:44:07,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:44:07,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:44:07,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311793847] [2020-09-25 06:44:07,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:44:07,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:07,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:44:07,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:44:07,601 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:44:09,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:09,893 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 06:44:09,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:44:09,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-09-25 06:44:09,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:09,933 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 06:44:09,933 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 06:44:09,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:09,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 06:44:10,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 06:44:10,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 06:44:10,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 06:44:10,058 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 147 [2020-09-25 06:44:10,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:10,059 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 06:44:10,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:44:10,060 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 06:44:10,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 06:44:10,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:10,068 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:44:10,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:44:10,069 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:10,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:10,069 INFO L82 PathProgramCache]: Analyzing trace with hash 345157294, now seen corresponding path program 1 times [2020-09-25 06:44:10,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:10,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249188188] [2020-09-25 06:44:10,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:10,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:10,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:10,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:10,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:10,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:11,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:12,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:12,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:14,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:15,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:15,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 06:44:15,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:44:15,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 06:44:15,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:15,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:44:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 06:44:15,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:15,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:15,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:15,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:15,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:15,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:15,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:44:15,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:15,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:15,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:15,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:15,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:15,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:15,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:44:15,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:15,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:44:15,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:15,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:15,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:15,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:15,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:44:15,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:44:15,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249188188] [2020-09-25 06:44:15,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:15,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:15,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274433917] [2020-09-25 06:44:15,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:15,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:15,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:15,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:15,375 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 06:44:16,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:16,904 INFO L93 Difference]: Finished difference Result 1623 states and 2079 transitions. [2020-09-25 06:44:16,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:16,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-25 06:44:16,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:16,911 INFO L225 Difference]: With dead ends: 1623 [2020-09-25 06:44:16,911 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 06:44:16,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:44:16,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 06:44:16,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 816. [2020-09-25 06:44:16,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-09-25 06:44:16,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1043 transitions. [2020-09-25 06:44:16,970 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1043 transitions. Word has length 165 [2020-09-25 06:44:16,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:16,971 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 1043 transitions. [2020-09-25 06:44:16,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1043 transitions. [2020-09-25 06:44:16,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 06:44:16,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:16,976 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] [2020-09-25 06:44:16,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:44:16,976 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:16,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:16,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1015227465, now seen corresponding path program 1 times [2020-09-25 06:44:16,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:16,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921192174] [2020-09-25 06:44:16,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:17,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:17,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:17,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:18,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:20,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:20,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:20,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:21,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:21,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:22,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:22,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 06:44:22,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:44:22,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:44:22,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:22,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:22,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:22,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 06:44:22,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 06:44:22,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:22,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:22,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:22,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:22,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:22,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:22,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:44:22,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:22,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:22,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:22,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:22,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:22,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:22,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:22,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:22,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:22,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 06:44:22,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:22,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:44:22,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:22,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:44:22,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:22,295 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 06:44:22,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921192174] [2020-09-25 06:44:22,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:22,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:22,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985911987] [2020-09-25 06:44:22,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:22,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:22,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:22,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:22,299 INFO L87 Difference]: Start difference. First operand 816 states and 1043 transitions. Second operand 5 states. [2020-09-25 06:44:24,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:24,411 INFO L93 Difference]: Finished difference Result 2075 states and 2796 transitions. [2020-09-25 06:44:24,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:24,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 06:44:24,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:24,420 INFO L225 Difference]: With dead ends: 2075 [2020-09-25 06:44:24,420 INFO L226 Difference]: Without dead ends: 1281 [2020-09-25 06:44:24,424 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 06:44:24,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-09-25 06:44:24,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1269. [2020-09-25 06:44:24,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-09-25 06:44:24,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1663 transitions. [2020-09-25 06:44:24,468 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1663 transitions. Word has length 173 [2020-09-25 06:44:24,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:24,469 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1663 transitions. [2020-09-25 06:44:24,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:24,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1663 transitions. [2020-09-25 06:44:24,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 06:44:24,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:24,477 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 06:44:24,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:44:24,477 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:24,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:24,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1591889424, now seen corresponding path program 1 times [2020-09-25 06:44:24,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:24,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483968988] [2020-09-25 06:44:24,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:24,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:24,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:24,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:25,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:29,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:29,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 06:44:29,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:44:29,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 06:44:29,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:29,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 06:44:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 06:44:29,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:29,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:29,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:29,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:29,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:29,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:29,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:44:29,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:29,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:29,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:29,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:29,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:29,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:29,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:29,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:29,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:29,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:44:29,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:29,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 06:44:29,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:29,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:29,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:29,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:44:29,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:29,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 06:44:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:29,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:29,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:29,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:44:29,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:29,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 06:44:29,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:29,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:29,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:29,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:29,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:44:29,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:29,914 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:44:29,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483968988] [2020-09-25 06:44:29,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:29,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:44:29,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989676595] [2020-09-25 06:44:29,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:44:29,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:29,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:44:29,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:44:29,923 INFO L87 Difference]: Start difference. First operand 1269 states and 1663 transitions. Second operand 7 states. [2020-09-25 06:44:33,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:33,010 INFO L93 Difference]: Finished difference Result 4142 states and 5944 transitions. [2020-09-25 06:44:33,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:44:33,010 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-09-25 06:44:33,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:33,038 INFO L225 Difference]: With dead ends: 4142 [2020-09-25 06:44:33,038 INFO L226 Difference]: Without dead ends: 2895 [2020-09-25 06:44:33,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:44:33,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-09-25 06:44:33,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 2835. [2020-09-25 06:44:33,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2835 states. [2020-09-25 06:44:33,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 3723 transitions. [2020-09-25 06:44:33,213 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 3723 transitions. Word has length 222 [2020-09-25 06:44:33,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:33,213 INFO L479 AbstractCegarLoop]: Abstraction has 2835 states and 3723 transitions. [2020-09-25 06:44:33,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:44:33,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 3723 transitions. [2020-09-25 06:44:33,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 06:44:33,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:33,238 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 06:44:33,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:44:33,239 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:33,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:33,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1032028468, now seen corresponding path program 1 times [2020-09-25 06:44:33,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:33,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822561200] [2020-09-25 06:44:33,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:33,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:33,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:33,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:33,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:38,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:38,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 06:44:38,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:44:38,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 06:44:38,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:38,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:38,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:38,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 06:44:38,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:44:38,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:38,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:38,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:38,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:38,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:38,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:38,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:44:38,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:38,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:38,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:38,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:38,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:38,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:38,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:38,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:38,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:38,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:44:38,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:38,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 06:44:38,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:38,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:44:38,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:38,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 06:44:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:38,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:38,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:38,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:44:38,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:38,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 06:44:38,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:38,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:38,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:44:38,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:44:38,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822561200] [2020-09-25 06:44:38,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:38,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:44:38,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808948584] [2020-09-25 06:44:38,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:44:38,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:38,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:44:38,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:44:38,671 INFO L87 Difference]: Start difference. First operand 2835 states and 3723 transitions. Second operand 8 states. [2020-09-25 06:44:41,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:41,788 INFO L93 Difference]: Finished difference Result 6166 states and 8396 transitions. [2020-09-25 06:44:41,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:44:41,788 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2020-09-25 06:44:41,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:41,813 INFO L225 Difference]: With dead ends: 6166 [2020-09-25 06:44:41,813 INFO L226 Difference]: Without dead ends: 3353 [2020-09-25 06:44:41,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:44:41,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2020-09-25 06:44:41,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 3128. [2020-09-25 06:44:41,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3128 states. [2020-09-25 06:44:41,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 4004 transitions. [2020-09-25 06:44:41,930 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 4004 transitions. Word has length 225 [2020-09-25 06:44:41,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:41,931 INFO L479 AbstractCegarLoop]: Abstraction has 3128 states and 4004 transitions. [2020-09-25 06:44:41,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:44:41,931 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 4004 transitions. [2020-09-25 06:44:41,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 06:44:41,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:41,952 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 06:44:41,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:44:41,952 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:41,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:41,953 INFO L82 PathProgramCache]: Analyzing trace with hash 553016873, now seen corresponding path program 1 times [2020-09-25 06:44:41,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:41,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128251035] [2020-09-25 06:44:41,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:42,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:42,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:42,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:42,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:42,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:44,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:44,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:45,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:45,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:46,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking...